3382 lines
109 KiB
Plaintext
3382 lines
109 KiB
Plaintext
KPL/PCK
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P_constants (PcK) SPICE kernel file
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===========================================================================
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By: Nat Bachman (NAIF) 2004 September 21
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File Organization
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--------------------------------------------------------
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The contents of this file are as follows.
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Introductory Information:
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-- File Organization
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-- Version description
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-- Disclaimer
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-- Sources
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-- Explanation
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-- Body numbers and names
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PcK Data:
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Orientation Data
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----------------
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-- Orientation constants for the Sun and planets.
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Additional items included in this section:
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- Earth north geomagnetic centered dipole values
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for epochs 1945-2000
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- Mars prime meridian offset "lambda_a"
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-- Orientation constants for satellites
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-- Orientation constants for asteroids Gaspra, Ida,
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Vesta, and Eros
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Radii of Bodies
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---------------
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-- Radii of Sun and planets
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-- Radii of satellites, where available
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-- Radii of asteroids Gaspra, Ida, Kleopatra, and Eros
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Version description
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--------------------------------------------------------
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This file was created on September 21, 2004. This version
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incorporates data from reference [2]: "Report of the IAU/IAG
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Working Group on Cartographic Coordinates and Rotational Elements
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of the Planets and Satellites: 2000." Note that the 2003
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version of this report is as yet unpublished.
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This file contains size, shape, and orientation data for all
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objects described by the previous version of the file, plus data
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for the asteroids Vesta, Kleopatra, and Eros.
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Disclaimer
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--------------------------------------------------------
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Applicability of Data
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This constants file may not contain the parameter values that
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you prefer. Note that this file may be readily modified by
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you or anyone else. NAIF suggests that you inspect this file
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visually before proceeding with any critical or extended
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data processing.
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File Modifications by Users
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NAIF requests that you update the "by line" and date if you
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modify this file.
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Known Limitations and Caveats
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In general, the orientation models given here are claimed by the
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IAU/IAG Working Group Report [2] to be accurate to 0.1 degree
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([2], p.85). However, NAIF notes that orientation models for
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natural satellites and asteroids have in some cases changed
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substantially with the availability of new observational data, so
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users are urged to investigate the suitability for their
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applications of the models presented here.
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NAIF strongly cautions against using the earth rotation model
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(from [2]) given here for work demanding high accuracy. This
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model has been determined by NAIF to have an error in the prime
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meridian location of magnitude at least 150 arcseconds, with a
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local minimum occurring during the year 1999. Regarding
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availability of better earth orientation data for use with the
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SPICE system:
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Earth orientation data are available from NAIF in the form of
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binary earth PCK files. NAIF employs an automated process to
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create these files; each time JPL's section 335 produces a new
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earth orientation parameter (EOP) file, a new PCK is produced.
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These PCKs cover a 12-month time span starting about nine
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months prior to the current date. In these PCK files, the
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following effects are accounted for in modeling the earth's
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rotation:
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- Precession: 1976 IAU model
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- Nutation: 1980 IAU model, plus interpolated
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EOP nutation corrections
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- Polar motion: interpolated from EOP file
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- True sidereal time:
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+ UT1 - UT1R (if needed): given by analytic formula
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+ TAI - UT1 (or UT1R): interpolated from EOP file
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+ UT1 - GMST: given by analytic formula
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+ equation of equinoxes: given by analytic formula
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where
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TAI = International Atomic Time
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UT1 = Greenwich hour angle of computed mean sun - 12h
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UT1R = Regularized UT1
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GMST = Greenwich mean sidereal time
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These kernels are available via anonymous ftp from the server
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naif.jpl.nasa.gov
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The kernels are in the path
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pub/naif/generic_kernels/pck
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At this time, these kernels have file names of the form
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earth_000101_yymmdd_yymmdd.bpc
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The second and third dates are, respectively, the file's
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coverage end time and the epoch of the last datum.
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These binary PCK files are very accurate (error < 0.1
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microradian) for epochs preceding the epoch of the last datum.
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For later epochs, the error rises to several microradians.
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Binary PCK files giving accurate earth orientation back to 1972
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and *low accuracy* predicted earth orientation to 2023 are also
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available in the same location.
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How does the rotation model used in the long term predict
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binary earth PCK compare to that used in this file? Because of
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the unpredictability of the earth's orientation, in particular
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of its spin, it's not possible to answer with certainty.
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However, we can make these observations:
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- The long term predict binary PCK presumably does a better
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job of predicting the orientation of the earth's equator
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since the binary PCK accounts for nutation and the model
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from [2] does not.
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- The prime meridian error in the model from [2] amounts
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to, at a minimum, about 10 seconds of rotation. It should
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take years for the spin error of the binary long term
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predict PCK to grow as large.
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Characteristics and names of the binary kernels described here
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are subject to change. Contact NAIF for details concerning
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binary earth PCKs.
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The SPICE Toolkit doesn't currently contain software to model the
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earth's north geomagnetic centered dipole as a function of time.
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As a convenience for users, the north dipole location from the
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J2000 epoch was selected as a representative datum, and the
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planetocentric longitude and latitude of this location have been
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associated with the keywords
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BODY399_N_GEOMAG_CTR_DIPOLE_LON
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BODY399_N_GEOMAG_CTR_DIPOLE_LAT
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Values for the earth's north geomagnetic centered dipole are
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presented in comments as a discrete time series for the time range
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1945-2000. For details concerning the the geomagnetic field model
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from which these values were derived, including a discussion of
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the model's accuracy, see [13].
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The Mars prime meridian offset given by [10] is not used by
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SPICE geometry software for computations involving the shape
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of Mars (for example, in sub-observer point or surface intercept
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computations). The value is provided for informational
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purposes only.
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SPICE Toolkits prior to version N0057 cannot make use of
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trigonometric polynomial terms in the formulas for orientation of
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the planets. The only planet for which such terms are used is
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Neptune. Use of trigonometric polynomial terms for natural
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satellites is and has been supported for all SPICE Toolkit
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versions.
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Sources
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--------------------------------------------------------
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The sources for the constants listed in this file are:
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[1] Seidelmann, P.K., Archinal, B.A., A'Hearn, M.F.,
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Cruikshank, D.P., Hilton, J.L., Keller, H.U., Oberst, J.,
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Simon, J.L., Stooke, P., Tholen, D.J., and Thomas, P.C.
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"Report of the IAU/IAG Working Group on Cartographic
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Coordinates and Rotational Elements of the Planets and
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Satellites: 2003," Unpublished.
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[2] Seidelmann, P.K., Abalakin, V.K., Bursa, M., Davies, M.E.,
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Bergh, C. de, Lieske, J.H., Oberst, J., Simon, J.L.,
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Standish, E.M., Stooke, P., and Thomas, P.C. (2002).
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"Report of the IAU/IAG Working Group on Cartographic
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Coordinates and Rotational Elements of the Planets and
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Satellites: 2000," Celestial Mechanics and Dynamical
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Astronomy, v.82, Issue 1, pp. 83-111.
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[3] Davies, M.E., Abalakin, V.K., Bursa, M., Kinoshita, H.,
|
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Kirk, R.L., Lieske, J.H., Marov, M.Ya., Seidelmann, P.K.,
|
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and Simon, J.-L. "Report of the IAU/IAG/COSPAR Working
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Group on Cartographic Coordinates and Rotational Elements
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of the Planets and Satellites: 1997," Unpublished.
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[4] Davies, M.E., Abalakin, V.K., Bursa, M., Lieske, J.H.,
|
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Morando, B., Morrison, D., Seidelmann, P.K., Sinclair,
|
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A.T., Yallop, B., and Tjuflin, Y.S. (1996). "Report of
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the IAU/IAG/COSPAR Working Group on Cartographic
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Coordinates and Rotational Elements of the Planets and
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Satellites: 1994," Celestial Mechanics and Dynamical
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Astronomy, v.63, pp. 127-148.
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[5] Davies, M.E., Abalakin, V.K., Brahic, A., Bursa, M.,
|
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Chovitz., B.H., Lieske, J.H., Seidelmann, P.K.,
|
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Sinclair, A.T., and Tiuflin, I.S. (1992). "Report of the
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IAU/IAG/COSPAR Working Group on Cartographic Coordinates
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and Rotational Elements of the Planets and Satellites:
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1991," Celestial Mechanics and Dynamical Astronomy,
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v.53, no.4, pp. 377-397.
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[6] Davies, M.E., Abalakin, V.K., Bursa, M., Hunt, G.E.,
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and Lieske, J.H. (1989). "Report of the IAU/IAG/COSPAR
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Working Group on Cartographic Coordinates and Rotational
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Elements of the Planets and Satellites: 1988," Celestial
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Mechanics and Dynamical Astronomy, v.46, no.2, pp.
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187-204.
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[7] Nautical Almanac Office, United States Naval Observatory
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and H.M. Nautical Almanac Office, Rutherford Appleton
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Laboratory (2005). "The Astronomical Almanac for
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the Year 2005," U.S. Government Printing Office,
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Washington, D.C.: and The Stationary Office, London.
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[8] Nautical Almanac Office, United States Naval Observatory,
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H.M. Nautical Almanac Office, Royal Greenwich
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Observatory, Jet Propulsion Laboratory, Bureau des
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Longitudes, and The Time Service and Astronomy
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Departments, United States Naval Observatory (1992).
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"Explanatory Supplement to the Astronomical Almanac," P.
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Kenneth Seidelmann, ed. University Science Books, 20
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Edgehill Road, Mill Valley, CA 9494.
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[9] Duxbury, Thomas C. (2001). "IAU/IAG 2000 Mars Cartographic
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Conventions," presentation to the Mars Express Data
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Archive Working Group, Dec. 14, 2001.
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[10] Russell, C.T. and Luhmann, J.G. (1990). "Earth: Magnetic
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Field and Magnetosphere." <http://www-ssc.igpp.ucla.
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edu/personnel/russell/papers/earth_mag>. Originally
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published in "Encyclopedia of Planetary Sciences," J.H.
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Shirley and R.W. Fainbridge, eds. Chapman and Hall,
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New York, pp 208-211.
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[11] Russell, C.T. (1971). "Geophysical Coordinate
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Transformations," Cosmic Electrodynamics 2 184-186.
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NAIF document 181.0.
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[12] ESA/ESTEC Space Environment Information System (SPENVIS)
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(2003). Web page: "Dipole approximations of the
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geomagnetic field." <http://www.spenvis.oma.be/spenvis/
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help/background/magfield/cd.html>.
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[13] International Association of Geomagnetism and Aeronomy
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and International Union of Geodesy and Geophysics (2004).
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Web page: "The 9th Generation International Geomagnetic
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Reference Field." <http://www.ngdc.noaa.gov/
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IAGA/vmod/igrf.html>.
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[14] Duxbury, Thomas C. (1979). "Planetary Geodetic Control
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Using Satellite Imaging," Journal of Geophysical Research,
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vol. 84, no. B3. This paper is cataloged as NAIF
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document 190.0.
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[15] Letter from Thomas C. Duxbury to Dr. Ephraim Lazeryevich
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Akim, Keldish Institute of Applied Mathematics, USSR
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Academy of Sciences, Moscow, USSR. This letter is
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cataloged as NAIF document number 195.0.
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[16] "Placeholder" values were supplied by NAIF for some radii
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of the bodies listed below:
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Body NAIF ID code
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---- ------------
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Metis 516
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Helene 612
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Larissa 807
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See the discussion below for further information.
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Most values are from [2]. All exceptions are
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commented where they occur in this file. The exceptions are:
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-- Radii for the Sun are from [7].
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-- The second nutation precession angle (M2) for Mars is
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represented by a quadratic polynomial in the 2000
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IAU report. The SPICELIB subroutine BODEUL can not
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handle this term (which is extremely small), so we
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truncate the polynomial to a linear one.
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-- For several satellites, the 2000 IAU report either gives
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a single radius value or a polar radius and a single
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equatorial radius. SPICE Toolkit software that uses body
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radii expects to find three radii whenever these data are
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read from the kernel pool. In the cases listed below,
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NAIF has used the mean radius value for all three radii.
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Wherever this was done, the fact has been noted.
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The affected satellites are:
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Body NAIF ID code
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---- ------------
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Metis 516
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Helene 612
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Larissa 807
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-- Earth north geomagnetic centered dipole values are from
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[12]. The article [10] was used to check most of
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these values, and the values were also re-computed from
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the 9th generation IGRF [13] by Nat Bachman.
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-- The Mars prime meridian offset angle is from [9].
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"Old values" listed are from the SPICE P_constants file
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dated April 24, 2000. Most of these values came from the
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1994 IAU report [4].
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Explanation
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--------------------------------------------------------
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The SPICE Toolkit software that uses this file is documented in
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the SPICE "Required Reading" file pck.req. For a terse
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description of the PCK file format, see the section below titled
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"File Format." See the SPICE "Required Reading" file kernel.req
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for a detailed explanation of the SPICE text kernel file format.
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The files pck.req and kernel.req are included in the documentation
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provided with the SPICE Toolkit.
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This file, which is logically part of the SPICE P-kernel, contains
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constants used to model the orientation, size and shape of the
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Sun, planets, and satellites. The orientation models express the
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direction of the pole and location of the prime meridian of a body
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as a function of time. The size/shape models ("shape models" for
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short) represent all bodies as ellipsoids, using two equatorial
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radii and a polar radius. Spheroids and spheres are obtained when
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two or all three radii are equal.
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File Format
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This file consists of a series of comment blocks and data blocks.
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Comment blocks, which contain free-form descriptive or explanatory
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text, are preceded by a \begintext token. Data blocks follow a
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\begindata token. In order to be recognized, each token shown
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here must be placed on a line by itself.
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The portion of the file preceding the first data block is treated
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as a comment block; it doesn't require an initial comment block
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token.
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This file identifies data using a series of
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KEYWORD = VALUE
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assignments. The left hand side of each assignment is a
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"kernel variable" name; the right hand side is an associated value
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or list of values. The SPICE subroutine API allows SPICE routines
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and user applications to retrieve the set of values associated
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with each kernel variable name.
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Kernel variable names are case-sensitive and are limited to
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32 characters in length.
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Numeric values may be integer or floating point. String values
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are normally limited to 80 characters in length; however, SPICE
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provides a mechanism for identifying longer, "continued" strings.
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See the SPICE routine STPOOL for details.
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String values are single quoted.
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When the right hand side of an assignment is a list of values,
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the list items may be separated by commas or simply by blanks.
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The list must be bracketed by parentheses. Example:
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BODY399_RADII = ( 6378.14 6378.14 6356.75 )
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Any blanks preceding or following keyword names, values and equal
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sign are ignored.
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Assignments may be spread over multiple lines, for example:
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BODY399_RADII = ( 6378.14
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6378.14
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6356.75 )
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This file may contain blank lines anywhere. Non-printing
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characters including TAB should not be present in the file: the
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presence of such characters may make the file unreadable by
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SPICE software.
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Time systems and reference frames
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The 2000 IAU/IAG Working Group Report [1] states that, to the
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accuracy of the formulas given, the time system used may be
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regarded as any of TDB (Barycentric Dynamical Time), TT
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(Terrestrial time, formerly called TDT), or T_eph (the independent
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variable of the JPL planetary ephemerides). Reference [2], from
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which most data in this report were taken, erroneously identifies
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the time system as TCB (Barycentric Coordinate Time).
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SPICE software treats the time system used in this file as T_eph,
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but for historical reasons SPICE documentation refers to the time
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system as both "ET" and "TDB." For consistency, documentation in
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this version of the file retains use of the name TDB.
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The origin of the time system is 2000 January 1 12:00:00 (TDB).
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Throughout SPICE documentation and in this file, we use the names
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"J2000 TDB" and "J2000" for this epoch. The name "J2000.0" is
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equivalent.
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The inertial reference frame used for the rotational elements in
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this file is identified by [1] as the ICRF (International
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Celestial Reference Frame). In this file, the frame is treated
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as J2000. The difference between the J2000 frame and the ICRF is
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on the order of tens of milliarcseconds and is well below the
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accuracy level of the formulas in this file.
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Orientation models
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All of the orientation models use three Euler angles to describe
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body orientation. To be precise, the Euler angles describe the
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orientation of the coordinate axes of the "Body Equator and Prime
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Meridian" system with respect to an inertial system. By default,
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the inertial system is J2000 (also called "EME2000"), but other
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frames can be specified in the file. See the PCK Required Reading
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for details.
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The first two angles, in order, are the J2000 right ascension and
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declination (henceforth RA and DEC) of the north pole of a body as
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a function of time. The third angle is the prime meridian location
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(represented by "W"), which is expressed as a rotation about the
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north pole, and is also a function of time.
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For the Sun and planets, the expressions for the north pole's
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right ascension and declination, as well as prime meridian
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location, are sums (as far as the models that appear in this file
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are concerned) of quadratic polynomials and trigonometric
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polynomials, where the independent variable is time. Some
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coefficients may be zero. Currently Neptune is the only planet
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for which trigonometric polynomial terms are used.
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In this file, the time arguments in expressions always refer to
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Barycentric Dynamical Time (TDB), measured in centuries or days
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past a reference epoch. By default, the reference epoch is
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the J2000 epoch, which is Julian ephemeris date 2451545.0, but
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other epochs can be specified in the file. See the PCK Required
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Reading for details.
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Example: 1991 IAU Model for orientation of the Earth. Note that
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these values are used as an example only; see the data area below
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for current values.
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alpha = 0.00 - 0.641 T ( RA )
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0
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delta = 90.0 - 0.557 T ( DEC )
|
|
0
|
|
|
|
W = 190.16 + 360.9856235 d ( Prime meridian )
|
|
|
|
|
|
T represents centuries past J2000 ( TDB ),
|
|
|
|
d represents days past J2000 ( TDB ).
|
|
|
|
In this file, the polynomials' coefficients above are assigned to the
|
|
symbols
|
|
|
|
BODY399_POLE_RA
|
|
BODY399_POLE_DEC
|
|
BODY399_POLE_PM
|
|
|
|
as follows:
|
|
|
|
BODY399_POLE_RA = ( 0. -0.641 0. )
|
|
BODY399_POLE_DEC = ( 90. -0.557 0. )
|
|
BODY399_PM = ( 190.16 360.9856235 0. )
|
|
|
|
Note the number "399"; this is the NAIF ID code for the Earth.
|
|
|
|
You'll see an additional symbol grouped with the ones listed here; it
|
|
is
|
|
|
|
BODY399_LONG_AXIS
|
|
|
|
This term is zero for all bodies except Mars. It represents the
|
|
angular offset between the meridian containing the longest axis of
|
|
the triaxial ellipsoid used to model a body and the prime meridian
|
|
of the body.
|
|
|
|
Expressions for satellites are a little more complicated; in addition
|
|
to polynomial terms, there are trigonometric terms. The arguments of
|
|
the trigonometric terms are linear polynomials. In this file, we call
|
|
the arguments of these trigonometric terms "nutation precession
|
|
angles."
|
|
|
|
In this file, the polynomial expressions for the nutation precession
|
|
angles are listed along with the planet's RA, DEC, and prime meridian
|
|
terms.
|
|
|
|
Example: 1991 IAU nutation precession angles for Earth. Note that these
|
|
values are used as an example only; see the data area below for current
|
|
values.
|
|
|
|
E1 = 125.045 - 0.052992 d
|
|
E2 = 250.090 - 0.105984 d
|
|
E3 = 260.008 + 13.012001 d
|
|
E4 = 176.625 + 13.340716 d
|
|
E5 = 357.529 + 0.985600 d
|
|
|
|
d represents days past J2000 ( TDB )
|
|
|
|
Because the SPICE Toolkit software expects the time units for the
|
|
angles to be CENTURIES (as in the IAU models for most bodies--the
|
|
Earth is an exception), the linear coefficients are scaled by
|
|
36525.0 (days/century) in the assignments:
|
|
|
|
BODY3_NUT_PREC_ANGLES = ( 125.045 -1935.5328
|
|
250.090 -3871.0656
|
|
260.008 475263.336525
|
|
176.625 487269.6519
|
|
357.529 35999.04 )
|
|
|
|
As stated above, the satellite orientation models use polynomial and
|
|
trigonometric terms, where the arguments of the trigonometric terms
|
|
are the "nutation precession angles."
|
|
|
|
Example: 1988 IAU values for the Moon. Again, these values are used
|
|
as an example only; see the data area below for current values.
|
|
|
|
|
|
alpha = 270.000 + 0.003 T - 3.878 sin(E1) - 0.120 sin(E2)
|
|
0
|
|
+ 0.070 sin(E3) - 0.017 sin(E4) (RA)
|
|
|
|
|
|
delta = 66.541 + 0.013 T + 1.543 cos(E1) + 0.024 cos(E2)
|
|
0
|
|
- 0.028 cos(E3) + 0.007 cos(E4) (DEC)
|
|
|
|
|
|
W = 38.317 + 13.1763582 d + 3.558 sin(E1)
|
|
|
|
+ 0.121 sin(E2)
|
|
|
|
- 0.064 sin(E3)
|
|
|
|
+ 0.016 sin(E4)
|
|
|
|
+ 0.025 sin(E5) ( Prime
|
|
meridian )
|
|
|
|
d represents days past J2000.
|
|
|
|
E1--E5 are the nutation precession angles.
|
|
|
|
The polynomial terms are assigned to symbols by the statements
|
|
|
|
BODY301_POLE_RA = ( 270.000 0.003 0. )
|
|
BODY301_POLE_DEC = ( 66.541 0.013 0. )
|
|
BODY301_PM = ( 38.317 13.1763582 0. )
|
|
|
|
The coefficients of the trigonometric terms are assigned to symbols by
|
|
the statements
|
|
|
|
BODY301_NUT_PREC_RA = ( -3.878 -0.120 0.070 -0.017 0. )
|
|
BODY301_NUT_PREC_DEC = ( 1.543 0.024 -0.028 0.007 0. )
|
|
BODY301_NUT_PREC_PM = ( 3.558 0.121 -0.064 0.016 0.025 )
|
|
|
|
Note that for the RA and PM (prime meridian) assignments, the ith term
|
|
is the coefficient of sin(Ei) in the expression used in the IAU model,
|
|
while for the DEC assignment, the ith term is the coefficient of
|
|
cos(Ei) in the expression used in the IAU model.
|
|
|
|
SPICE software expects the models for satellite orientation to
|
|
follow the form of the model shown here: the polynomial portions of the
|
|
RA, DEC, and W expressions are expected to be quadratic, the
|
|
trigonometric terms for RA and W (satellite prime meridian) are expected
|
|
to be linear combinations of sines of nutation precession angles, the
|
|
trigonometric terms for DEC are expected to be linear combinations of
|
|
cosines of nutation precession angles, and the polynomials for the
|
|
nutation precession angles themselves are expected to be linear.
|
|
|
|
Eventually, the software will handle more complex expressions, we
|
|
expect.
|
|
|
|
|
|
Shape models
|
|
|
|
There is only one kind of shape model supported by the SPICE Toolkit
|
|
software at present: the triaxial ellipsoid. The 2000 IAU report does
|
|
not use any other models, except in the case of Mars, where
|
|
separate values are given for the north and south polar radii.
|
|
|
|
For each body, three radii are listed: The first number is
|
|
the largest equatorial radius (the length of the semi-axis
|
|
containing the prime meridian), the second number is the smaller
|
|
equatorial radius, and the third is the polar radius.
|
|
|
|
Example: Radii of the Earth.
|
|
|
|
BODY399_RADII = ( 6378.14 6378.14 6356.75 )
|
|
|
|
|
|
Body numbers and names
|
|
--------------------------------------------------------
|
|
|
|
|
|
1 Mercury barycenter
|
|
2 Venus barycenter
|
|
3 Earth barycenter
|
|
4 Mars barycenter
|
|
5 Jupiter barycenter
|
|
6 Saturn barycenter
|
|
7 Uranus barycenter
|
|
8 Neptune barycenter
|
|
9 Pluto barycenter
|
|
10 Sun
|
|
|
|
While not relevant to the P_constants kernel, we note here for
|
|
completeness that 0 is used to represent the solar system
|
|
barycenter.
|
|
|
|
199 Mercury
|
|
|
|
|
|
299 Venus
|
|
|
|
|
|
399 Earth
|
|
|
|
301 Moon
|
|
|
|
|
|
499 Mars
|
|
|
|
401 Phobos 402 Deimos
|
|
|
|
|
|
599 Jupiter
|
|
|
|
501 Io 502 Europa 503 Ganymede 504 Callisto
|
|
505 Amalthea 506 Himalia 507 Elara 508 Pasiphae
|
|
509 Sinope 510 Lysithea 511 Carme 512 Ananke
|
|
513 Leda 514 Thebe 515 Adrastea 516 Metis
|
|
|
|
|
|
699 Saturn
|
|
|
|
601 Mimas 602 Enceladus 603 Tethys 604 Dione
|
|
605 Rhea 606 Titan 607 Hyperion 608 Iapetus
|
|
609 Phoebe 610 Janus 611 Epimetheus 612 Helene
|
|
613 Telesto 614 Calypso 615 Atlas 616 Prometheus
|
|
617 Pandora 618 Pan
|
|
|
|
|
|
799 Uranus
|
|
|
|
701 Ariel 702 Umbriel 703 Titania 704 Oberon
|
|
705 Miranda 706 Cordelia 707 Ophelia 708 Bianca
|
|
709 Cressida 710 Desdemona 711 Juliet 712 Portia
|
|
713 Rosalind 714 Belinda 715 Puck
|
|
|
|
|
|
899 Neptune
|
|
|
|
801 Triton 802 Nereid 803 Naiad 804 Thalassa
|
|
805 Despina 806 Galatea 807 Larissa 808 Proteus
|
|
|
|
|
|
999 Pluto
|
|
|
|
901 Charon
|
|
|
|
|
|
2000004 Asteroid Vesta
|
|
2000216 Asteroid Kleopatra
|
|
2000433 Asteroid Eros
|
|
2431010 Asteroid Ida
|
|
9511010 Asteroid Gaspra
|
|
|
|
|
|
Orientation constants for the Sun and planets
|
|
--------------------------------------------------------
|
|
|
|
|
|
Sun
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY10_POLE_RA = ( 286.13 0. 0. )
|
|
BODY10_POLE_DEC = ( 63.87 0. 0. )
|
|
BODY10_PM = ( 84.10 14.18440 0. )
|
|
BODY10_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
Mercury
|
|
|
|
Old values:
|
|
|
|
body199_pole_ra = ( 281.01, -0.033, 0. )
|
|
body199_pole_dec = ( 61.45, -0.005, 0. )
|
|
body199_pm = ( 329.55 6.1385025 0. )
|
|
|
|
body199_long_axis = ( 0. )
|
|
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY199_POLE_RA = ( 281.01 -0.033 0. )
|
|
BODY199_POLE_DEC = ( 61.45 -0.005 0. )
|
|
BODY199_PM = ( 329.548 6.1385025 0. )
|
|
|
|
BODY199_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
Venus
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY299_POLE_RA = ( 272.76 0. 0. )
|
|
BODY299_POLE_DEC = ( 67.16 0. 0. )
|
|
BODY299_PM = ( 160.20 -1.4813688 0. )
|
|
|
|
BODY299_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
Earth
|
|
|
|
Old values:
|
|
|
|
Values shown are from the 1994 IAU report [4].
|
|
|
|
body399_pole_ra = ( 0. -0.641 0. )
|
|
body399_pole_dec = ( 90. -0.557 0. )
|
|
body399_pm = ( 190.16 360.9856235 0. )
|
|
body399_long_axis = ( 0. )
|
|
|
|
Nutation precession angles are unchanged in the 2000 report.
|
|
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY399_POLE_RA = ( 0. -0.641 0. )
|
|
BODY399_POLE_DEC = ( 90. -0.557 0. )
|
|
BODY399_PM = ( 190.147 360.9856235 0. )
|
|
BODY399_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
Nutation precession angles for the Earth-Moon system:
|
|
|
|
The linear coefficients have been scaled up from degrees/day
|
|
to degrees/century, because the SPICELIB PCK reader expects
|
|
these units. The original constants were:
|
|
|
|
125.045D0 -0.0529921D0
|
|
250.089D0 -0.1059842D0
|
|
260.008D0 13.0120009D0
|
|
176.625D0 13.3407154D0
|
|
357.529D0 0.9856003D0
|
|
311.589D0 26.4057084D0
|
|
134.963D0 13.0649930D0
|
|
276.617D0 0.3287146D0
|
|
34.226D0 1.7484877D0
|
|
15.134D0 -0.1589763D0
|
|
119.743D0 0.0036096D0
|
|
239.961D0 0.1643573D0
|
|
25.053D0 12.9590088D0
|
|
|
|
|
|
\begindata
|
|
|
|
|
|
BODY3_NUT_PREC_ANGLES = ( 125.045 -1935.5364525000
|
|
250.089 -3871.0729050000
|
|
260.008 475263.3328725000
|
|
176.625 487269.6299850000
|
|
357.529 35999.0509575000
|
|
311.589 964468.4993100000
|
|
134.963 477198.8693250000
|
|
276.617 12006.3007650000
|
|
34.226 63863.5132425000
|
|
15.134 -5806.6093575000
|
|
119.743 131.8406400000
|
|
239.961 6003.1503825000
|
|
25.053 473327.7964200000 )
|
|
|
|
|
|
\begintext
|
|
|
|
|
|
Earth north geomagnetic centered dipole:
|
|
|
|
Old values:
|
|
|
|
Values are from [11]. Note the year of publication was 1971.
|
|
|
|
body399_mag_north_pole_lon = ( -69.761 )
|
|
body399_mag_north_pole_lat = ( 78.565 )
|
|
|
|
|
|
Current values:
|
|
|
|
The north dipole location is time-varying. The values shown
|
|
below, taken from [12], represent a discrete sampling of the
|
|
north dipole location from 1945 to 2000. The terms DGRF and
|
|
IGRF refer to, respectively, "Definitive Geomagnetic
|
|
Reference Field" and "International Geomagnetic Reference
|
|
Field." See references [10], [12], and [13] for details.
|
|
|
|
Coordinates are planetocentric.
|
|
|
|
Data source Lat Lon
|
|
----------- ----- ------
|
|
DGRF 1945 78.47 291.47
|
|
DGRF 1950 78.47 291.15
|
|
DGRF 1955 78.46 290.84
|
|
DGRF 1960 78.51 290.53
|
|
DGRF 1965 78.53 290.15
|
|
DGRF 1970 78.59 289.82
|
|
DGRF 1975 78.69 289.53
|
|
DGRF 1980 78.81 289.24
|
|
DGRF 1985 78.97 289.10
|
|
DGRF 1990 79.13 288.89
|
|
IGRF 1995 79.30 288.59
|
|
IGRF 2000 79.54 288.43
|
|
|
|
|
|
Values are given for the epoch 2000 and are from the final row
|
|
of the above table, which is from [12]. As shown by the table
|
|
these values constitute a low-accuracy approximation for epochs
|
|
not close to 2000.
|
|
|
|
\begindata
|
|
|
|
BODY399_N_GEOMAG_CTR_DIPOLE_LON = ( 288.43 )
|
|
BODY399_N_GEOMAG_CTR_DIPOLE_LAT = ( 79.54 )
|
|
|
|
\begintext
|
|
|
|
|
|
Mars
|
|
|
|
Old values:
|
|
|
|
Values shown are from the 1994 IAU report [4].
|
|
|
|
body499_pole_ra = ( 317.681 -0.108 0. )
|
|
body499_pole_dec = ( 52.886 -0.061 0. )
|
|
body499_pm = ( 176.901 350.8919830 0. )
|
|
|
|
Nutation precession angles are unchanged in the 2000 IAU report.
|
|
|
|
Old lambda_a values were specified as POSITIVE WEST LONGITUDE.
|
|
Reference [14] gave the value
|
|
|
|
body499_long_axis = ( 110. )
|
|
|
|
and reference [15] gave the value
|
|
|
|
body499_long_axis = ( 104.9194 )
|
|
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY499_POLE_RA = ( 317.68143 -0.1061 0. )
|
|
BODY499_POLE_DEC = ( 52.88650 -0.0609 0. )
|
|
BODY499_PM = ( 176.630 350.89198226 0. )
|
|
|
|
\begintext
|
|
|
|
Source [9] specifies the following value for the lambda_a term
|
|
(BODY499_LONG_AXIS ) for Mars. This term is the POSITIVE EAST
|
|
LONGITUDE, measured from the prime meridian, of the meridian
|
|
containing the longest axis of the reference ellipsoid.
|
|
(CAUTION: previous values were POSITIVE WEST.)
|
|
|
|
body499_long_axis = ( 252. )
|
|
|
|
We list this lambda_a value for completeness. The IAU report
|
|
[2] gives equal values for both equatorial radii, so the
|
|
lambda_a offset does not apply to the IAU model.
|
|
|
|
The 2000 IAU report defines M2, the second nutation precession angle,
|
|
by:
|
|
|
|
2
|
|
192.93 + 1128.4096700 d + 8.864 T
|
|
|
|
We truncate the M2 series to a linear expression, because the PCK
|
|
software cannot handle the quadratic term.
|
|
|
|
Again, the linear terms are scaled by 36525.0:
|
|
|
|
-0.4357640000000000 --> -15916.28010000000
|
|
1128.409670000000 --> 41215163.19675000
|
|
-1.8151000000000000E-02 --> -662.9652750000000
|
|
|
|
We also introduce a fourth nutation precession angle, which
|
|
is the pi/2-complement of the third angle. This angle is used
|
|
in computing the prime meridian location for Deimos. See the
|
|
discussion of this angle below in the section containing orientation
|
|
constants for Deimos.
|
|
|
|
\begindata
|
|
|
|
BODY4_NUT_PREC_ANGLES = ( 169.51 -15916.2801
|
|
192.93 41215163.19675
|
|
53.47 -662.965275
|
|
36.53 662.965275 )
|
|
|
|
\begintext
|
|
|
|
|
|
Jupiter
|
|
|
|
Old values:
|
|
|
|
body599_pole_ra = ( 268.05 -0.009 0. )
|
|
body599_pole_dec = ( +64.49 +0.003 0. )
|
|
body599_pm = ( 284.95 +870.5366420 0. )
|
|
body599_long_axis = ( 0. )
|
|
|
|
body5_nut_prec_angles = ( 73.32 +91472.9
|
|
24.62 +45137.2
|
|
283.90 +4850.7
|
|
355.80 +1191.3
|
|
119.90 +262.1
|
|
229.80 +64.3
|
|
352.25 +2382.6
|
|
113.35 +6070.0
|
|
146.64 +182945.8
|
|
49.24 +90274.4 )
|
|
|
|
Current values:
|
|
|
|
The number of nutation precession angles is ten. The ninth and
|
|
tenth are twice the first and second, respectively.
|
|
|
|
\begindata
|
|
|
|
|
|
BODY599_POLE_RA = ( 268.05 -0.009 0. )
|
|
BODY599_POLE_DEC = ( 64.49 0.003 0. )
|
|
BODY599_PM = ( 284.95 870.5366420 0. )
|
|
BODY599_LONG_AXIS = ( 0. )
|
|
|
|
BODY5_NUT_PREC_ANGLES = ( 73.32 91472.9
|
|
24.62 45137.2
|
|
283.90 4850.7
|
|
355.80 1191.3
|
|
119.90 262.1
|
|
229.80 64.3
|
|
352.35 2382.6
|
|
113.35 6070.0
|
|
146.64 182945.8
|
|
49.24 90274.4 )
|
|
\begintext
|
|
|
|
|
|
Saturn
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY699_POLE_RA = ( 40.589 -0.036 0. )
|
|
BODY699_POLE_DEC = ( 83.537 -0.004 0. )
|
|
BODY699_PM = ( 38.90 810.7939024 0. )
|
|
BODY699_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
The first seven angles given here are the angles S1
|
|
through S7 from the 2000 report; the eighth and
|
|
ninth angles are 2*S1 and 2*S2, respectively.
|
|
|
|
|
|
\begindata
|
|
|
|
BODY6_NUT_PREC_ANGLES = ( 353.32 75706.7
|
|
28.72 75706.7
|
|
177.40 -36505.5
|
|
300.00 -7225.9
|
|
316.45 506.2
|
|
345.20 -1016.3
|
|
29.80 -52.1
|
|
706.64 151413.4
|
|
57.44 151413.4 )
|
|
\begintext
|
|
|
|
|
|
Uranus
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY799_POLE_RA = ( 257.311 0. 0. )
|
|
BODY799_POLE_DEC = ( -15.175 0. 0. )
|
|
BODY799_PM = ( 203.81 -501.1600928 0. )
|
|
BODY799_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
The first 16 angles given here are the angles U1
|
|
through U16 from the 2000 report; the 17th and
|
|
18th angles are 2*U11 and 2*U12, respectively.
|
|
|
|
\begindata
|
|
|
|
BODY7_NUT_PREC_ANGLES = ( 115.75 54991.87
|
|
141.69 41887.66
|
|
135.03 29927.35
|
|
61.77 25733.59
|
|
249.32 24471.46
|
|
43.86 22278.41
|
|
77.66 20289.42
|
|
157.36 16652.76
|
|
101.81 12872.63
|
|
138.64 8061.81
|
|
102.23 -2024.22
|
|
316.41 2863.96
|
|
304.01 -51.94
|
|
308.71 -93.17
|
|
340.82 -75.32
|
|
259.14 -504.81
|
|
204.46 -4048.44
|
|
632.82 5727.92 )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Neptune
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report. However,
|
|
the kernel variables used to store the values have changed.
|
|
See note immediately below.
|
|
|
|
Current values:
|
|
|
|
The kernel variables
|
|
|
|
BODY899_NUT_PREC_RA
|
|
BODY899_NUT_PREC_DEC
|
|
BODY899_NUT_PREC_PM
|
|
|
|
are new in this PCK version (dated October 17, 2003).
|
|
These variables capture trigonometric terms in the expressions
|
|
for Neptune's pole direction and prime meridian location.
|
|
Version N0057 of the SPICE Toolkit uses these variables;
|
|
earlier versions can read them but ignore them when
|
|
computing Neptune's orientation.
|
|
|
|
\begindata
|
|
|
|
BODY899_POLE_RA = ( 299.36 0. 0. )
|
|
BODY899_POLE_DEC = ( 43.46 0. 0. )
|
|
BODY899_PM = ( 253.18 536.3128492 0. )
|
|
BODY899_LONG_AXIS = ( 0. )
|
|
|
|
|
|
BODY899_NUT_PREC_RA = ( 0.70 0. 0. 0. 0. 0. 0. 0. )
|
|
BODY899_NUT_PREC_DEC = ( -0.51 0. 0. 0. 0. 0. 0. 0. )
|
|
BODY899_NUT_PREC_PM = ( -0.48 0. 0. 0. 0. 0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
The 2000 report defines the nutation precession angles
|
|
|
|
N, N1, N2, ... , N7
|
|
|
|
and also uses the multiples of N1 and N7
|
|
|
|
2*N1
|
|
|
|
and
|
|
|
|
2*N7, 3*N7, ..., 9*N7
|
|
|
|
In this file, we treat the angles and their multiples as
|
|
separate angles. In the kernel variable
|
|
|
|
BODY8_NUT_PREC_ANGLES
|
|
|
|
the order of the angles is
|
|
|
|
N, N1, N2, ... , N7, 2*N1, 2*N7, 3*N7, ..., 9*N7
|
|
|
|
Each angle is defined by a linear polynomial, so two
|
|
consecutive array elements are allocated for each
|
|
angle. The first term of each pair is the constant term,
|
|
the second is the linear term.
|
|
|
|
\begindata
|
|
|
|
BODY8_NUT_PREC_ANGLES = ( 357.85 52.316
|
|
323.92 62606.6
|
|
220.51 55064.2
|
|
354.27 46564.5
|
|
75.31 26109.4
|
|
35.36 14325.4
|
|
142.61 2824.6
|
|
177.85 52.316
|
|
647.840 125213.200
|
|
355.700 104.632
|
|
533.550 156.948
|
|
711.400 209.264
|
|
889.250 261.580
|
|
1067.100 313.896
|
|
1244.950 366.212
|
|
1422.800 418.528
|
|
1600.650 470.844 )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Pluto
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY999_POLE_RA = ( 313.02 0. 0. )
|
|
BODY999_POLE_DEC = ( 9.09 0. 0. )
|
|
BODY999_PM = ( 236.77 -56.3623195 0. )
|
|
BODY999_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
|
|
Orientation constants for the satellites
|
|
--------------------------------------------------------
|
|
|
|
|
|
Satellites of Earth
|
|
|
|
Old values:
|
|
|
|
Values are from the 1988 IAU report.
|
|
|
|
body301_pole_ra = ( 270.000 0. 0. )
|
|
body301_pole_dec = ( 66.534 0. 0. )
|
|
body301_pm = ( 38.314 13.1763581 0. )
|
|
body301_long_axis = ( 0. )
|
|
|
|
body301_nut_prec_ra = ( -3.878 -0.120 0.070 -0.017 0. )
|
|
body301_nut_prec_dec = ( 1.543 0.024 -0.028 0.007 0. )
|
|
body301_nut_prec_pm = ( 3.558 0.121 -0.064 0.016 0.025 )
|
|
|
|
BODY301_POLE_RA = ( 269.9949 0.0031 0. )
|
|
BODY301_POLE_DEC = ( 66.5392 0.0130 0. )
|
|
BODY301_PM = ( 38.3213 13.17635815 -1.4D-12 )
|
|
BODY301_LONG_AXIS = ( 0. )
|
|
|
|
BODY301_NUT_PREC_RA = ( -3.8787 -0.1204 0.0700 -0.0172
|
|
0. 0.0072 0. 0.
|
|
0. -0.0052 0. 0.
|
|
0.0043 )
|
|
|
|
BODY301_NUT_PREC_DEC = ( 1.5419 0.0239 -0.0278 0.0068
|
|
0. -0.0029 0.0009 0.
|
|
0. 0.0008 0. 0.
|
|
-0.0009 )
|
|
|
|
BODY301_NUT_PREC_PM = ( 3.5610 0.1208 -0.0642 0.0158
|
|
0.0252 -0.0066 -0.0047 -0.0046
|
|
0.0028 0.0052 0.0040 0.0019
|
|
-0.0044 )
|
|
|
|
New values:
|
|
|
|
\begindata
|
|
|
|
|
|
|
|
|
|
|
|
BODY301_POLE_RA = ( 269.9949 0.0031 0. )
|
|
BODY301_POLE_DEC = ( 66.5392 0.0130 0. )
|
|
BODY301_PM = ( 38.3213 13.17635815 -1.4D-12 )
|
|
BODY301_LONG_AXIS = ( 0. )
|
|
|
|
BODY301_NUT_PREC_RA = ( -3.8787 -0.1204 0.0700 -0.0172
|
|
0.0 0.0072 0.0 0.0
|
|
0.0 -0.0052 0.0 0.0
|
|
0.0043 )
|
|
|
|
BODY301_NUT_PREC_DEC = ( 1.5419 0.0239 -0.0278 0.0068
|
|
0.0 -0.0029 0.0009 0.0
|
|
0.0 0.0008 0.0 0.0
|
|
-0.0009 )
|
|
|
|
BODY301_NUT_PREC_PM = ( 3.5610 0.1208 -0.0642 0.0158
|
|
0.0252 -0.0066 -0.0047 -0.0046
|
|
0.0028 0.0052 0.0040 0.0019
|
|
-0.0044 )
|
|
\begintext
|
|
|
|
|
|
|
|
Satellites of Mars
|
|
|
|
|
|
Phobos
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
The quadratic prime meridian term is scaled by 1/36525**2:
|
|
|
|
8.864000000000000 ---> 6.6443009930565219E-09
|
|
|
|
\begindata
|
|
|
|
BODY401_POLE_RA = ( 317.68 -0.108 0. )
|
|
BODY401_POLE_DEC = ( 52.90 -0.061 0. )
|
|
BODY401_PM = ( 35.06 1128.8445850 6.6443009930565219E-09 )
|
|
|
|
BODY401_LONG_AXIS = ( 0. 0. )
|
|
|
|
BODY401_NUT_PREC_RA = ( 1.79 0. 0. 0. )
|
|
BODY401_NUT_PREC_DEC = ( -1.08 0. 0. 0. )
|
|
BODY401_NUT_PREC_PM = ( -1.42 -0.78 0. 0. )
|
|
|
|
|
|
\begintext
|
|
|
|
|
|
Deimos
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
|
|
New values:
|
|
|
|
The Deimos prime meridian expression is:
|
|
|
|
|
|
2
|
|
W = 79.41 + 285.1618970 d - 0.520 T - 2.58 sin M
|
|
3
|
|
|
|
+ 0.19 cos M .
|
|
3
|
|
|
|
|
|
At the present time, the PCK kernel software (the routine
|
|
BODEUL in particular) cannot handle the cosine term directly,
|
|
but we can represent it as
|
|
|
|
0.19 sin M
|
|
4
|
|
|
|
where
|
|
|
|
M = 90.D0 - M
|
|
4 3
|
|
|
|
Therefore, the nutation precession angle assignments for Phobos
|
|
and Deimos contain four coefficients rather than three.
|
|
|
|
The quadratic prime meridian term is scaled by 1/36525**2:
|
|
|
|
-0.5200000000000000 ---> -3.8978300049519307E-10
|
|
|
|
\begindata
|
|
|
|
BODY402_POLE_RA = ( 316.65 -0.108 0. )
|
|
BODY402_POLE_DEC = ( 53.52 -0.061 0. )
|
|
BODY402_PM = ( 79.41 285.1618970 -3.897830D-10 )
|
|
BODY402_LONG_AXIS = ( 0. )
|
|
|
|
BODY402_NUT_PREC_RA = ( 0. 0. 2.98 0. )
|
|
BODY402_NUT_PREC_DEC = ( 0. 0. -1.78 0. )
|
|
BODY402_NUT_PREC_PM = ( 0. 0. -2.58 0.19 )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
|
|
Satellites of Jupiter
|
|
|
|
|
|
Io
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY501_POLE_RA = ( 268.05 -0.009 0. )
|
|
BODY501_POLE_DEC = ( 64.50 0.003 0. )
|
|
BODY501_PM = ( 200.39 203.4889538 0. )
|
|
BODY501_LONG_AXIS = ( 0. )
|
|
|
|
BODY501_NUT_PREC_RA = ( 0. 0. 0.094 0.024 )
|
|
BODY501_NUT_PREC_DEC = ( 0. 0. 0.040 0.011 )
|
|
BODY501_NUT_PREC_PM = ( 0. 0. -0.085 -0.022 )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Europa
|
|
|
|
|
|
Old values:
|
|
|
|
body502_pole_ra = ( 268.08 -0.009 0. )
|
|
body502_pole_dec = ( 64.51 0.003 0. )
|
|
body502_pm = ( 35.67 101.3747235 0. )
|
|
body502_long_axis = ( 0. )
|
|
|
|
body502_nut_prec_ra = ( 0. 0. 0. 1.086 0.060 0.015 0.009 )
|
|
body502_nut_prec_dec = ( 0. 0. 0. 0.468 0.026 0.007 0.002 )
|
|
body502_nut_prec_pm = ( 0. 0. 0. -0.980 -0.054 -0.014 -0.008 )
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY502_POLE_RA = ( 268.08 -0.009 0. )
|
|
BODY502_POLE_DEC = ( 64.51 0.003 0. )
|
|
BODY502_PM = ( 36.022 101.3747235 0. )
|
|
BODY502_LONG_AXIS = ( 0. )
|
|
|
|
BODY502_NUT_PREC_RA = ( 0. 0. 0. 1.086 0.060 0.015 0.009 )
|
|
BODY502_NUT_PREC_DEC = ( 0. 0. 0. 0.468 0.026 0.007 0.002 )
|
|
BODY502_NUT_PREC_PM = ( 0. 0. 0. -0.980 -0.054 -0.014 -0.008 )
|
|
|
|
\begintext
|
|
|
|
|
|
Ganymede
|
|
|
|
Old values:
|
|
|
|
body503_pole_ra = ( 268.20 -0.009 0. )
|
|
body503_pole_dec = ( +64.57 +0.003 0. )
|
|
body503_pm = ( 44.04 +50.3176081 0. )
|
|
body503_long_axis = ( 0. )
|
|
|
|
body503_nut_prec_ra = ( 0. 0. 0. -0.037 +0.431 +0.091 )
|
|
body503_nut_prec_dec = ( 0. 0. 0. -0.016 +0.186 +0.039 )
|
|
body503_nut_prec_pm = ( 0. 0. 0. +0.033 -0.389 -0.082 )
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY503_POLE_RA = ( 268.20 -0.009 0. )
|
|
BODY503_POLE_DEC = ( 64.57 0.003 0. )
|
|
BODY503_PM = ( 44.064 50.3176081 0. )
|
|
BODY503_LONG_AXIS = ( 0. )
|
|
|
|
BODY503_NUT_PREC_RA = ( 0. 0. 0. -0.037 0.431 0.091 )
|
|
BODY503_NUT_PREC_DEC = ( 0. 0. 0. -0.016 0.186 0.039 )
|
|
BODY503_NUT_PREC_PM = ( 0. 0. 0. 0.033 -0.389 -0.082 )
|
|
|
|
\begintext
|
|
|
|
|
|
Callisto
|
|
|
|
|
|
Old values:
|
|
|
|
body504_pole_ra = ( 268.72 -0.009 0. )
|
|
body504_pole_dec = ( +64.83 +0.003 0. )
|
|
body504_pm = ( 259.73 +21.5710715 0. )
|
|
body504_long_axis = ( 0. )
|
|
|
|
body504_nut_prec_ra = ( 0. 0. 0. 0. -0.068 +0.590 0. +0.010 )
|
|
body504_nut_prec_dec = ( 0. 0. 0. 0. -0.029 +0.254 0. -0.004 )
|
|
body504_nut_prec_pm = ( 0. 0. 0. 0. +0.061 -0.533 0. -0.009 )
|
|
|
|
Current values:
|
|
|
|
|
|
\begindata
|
|
|
|
BODY504_POLE_RA = ( 268.72 -0.009 0. )
|
|
BODY504_POLE_DEC = ( 64.83 0.003 0. )
|
|
BODY504_PM = ( 259.51 21.5710715 0. )
|
|
BODY504_LONG_AXIS = ( 0. )
|
|
|
|
BODY504_NUT_PREC_RA = ( 0. 0. 0. 0. -0.068 0.590 0. 0.010 )
|
|
BODY504_NUT_PREC_DEC = ( 0. 0. 0. 0. -0.029 0.254 0. -0.004 )
|
|
BODY504_NUT_PREC_PM = ( 0. 0. 0. 0. 0.061 -0.533 0. -0.009 )
|
|
|
|
\begintext
|
|
|
|
|
|
Amalthea
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY505_POLE_RA = ( 268.05 -0.009 0. )
|
|
BODY505_POLE_DEC = ( 64.49 0.003 0. )
|
|
BODY505_PM = ( 231.67 722.6314560 0. )
|
|
BODY505_LONG_AXIS = ( 0. )
|
|
|
|
BODY505_NUT_PREC_RA = ( -0.84 0. 0. 0. 0. 0. 0. 0. 0.01 0. )
|
|
BODY505_NUT_PREC_DEC = ( -0.36 0. 0. 0. 0. 0. 0. 0. 0. 0. )
|
|
BODY505_NUT_PREC_PM = ( 0.76 0. 0. 0. 0. 0. 0. 0. -0.01 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
Thebe
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY514_POLE_RA = ( 268.05 -0.009 0. )
|
|
BODY514_POLE_DEC = ( 64.49 0.003 0. )
|
|
BODY514_PM = ( 8.56 533.7004100 0. )
|
|
BODY514_LONG_AXIS = ( 0. )
|
|
|
|
BODY514_NUT_PREC_RA = ( 0. -2.11 0. 0. 0. 0. 0. 0. 0. 0.04 )
|
|
BODY514_NUT_PREC_DEC = ( 0. -0.91 0. 0. 0. 0. 0. 0. 0. 0.01 )
|
|
BODY514_NUT_PREC_PM = ( 0. 1.91 0. 0. 0. 0. 0. 0. 0. -0.04 )
|
|
|
|
\begintext
|
|
|
|
|
|
Adrastea
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
|
|
|
|
BODY515_POLE_RA = ( 268.05 -0.009 0. )
|
|
BODY515_POLE_DEC = ( 64.49 0.003 0. )
|
|
BODY515_PM = ( 33.29 1206.9986602 0. )
|
|
BODY515_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
Metis
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY516_POLE_RA = ( 268.05 -0.009 0. )
|
|
BODY516_POLE_DEC = ( 64.49 0.003 0. )
|
|
BODY516_PM = ( 346.09 1221.2547301 0. )
|
|
BODY516_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Satellites of Saturn
|
|
|
|
|
|
Mimas
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY601_POLE_RA = ( 40.66 -0.036 0. )
|
|
BODY601_POLE_DEC = ( 83.52 -0.004 0. )
|
|
BODY601_PM = ( 337.46 381.9945550 0. )
|
|
BODY601_LONG_AXIS = ( 0. )
|
|
|
|
BODY601_NUT_PREC_RA = ( 0. 0. 13.56 0. 0. 0. 0. 0. 0. )
|
|
BODY601_NUT_PREC_DEC = ( 0. 0. -1.53 0. 0. 0. 0. 0. 0. )
|
|
BODY601_NUT_PREC_PM = ( 0. 0. -13.48 0. -44.85 0. 0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
Enceladus
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY602_POLE_RA = ( 40.66 -0.036 0. )
|
|
BODY602_POLE_DEC = ( 83.52 -0.004 0. )
|
|
BODY602_PM = ( 2.82 262.7318996 0. )
|
|
BODY602_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Tethys
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY603_POLE_RA = ( 40.66 -0.036 0. )
|
|
BODY603_POLE_DEC = ( 83.52 -0.004 0. )
|
|
BODY603_PM = ( 10.45 190.6979085 0. )
|
|
BODY603_LONG_AXIS = ( 0. )
|
|
|
|
BODY603_NUT_PREC_RA = ( 0. 0. 0. 9.66 0. 0. 0. 0. 0. )
|
|
BODY603_NUT_PREC_DEC = ( 0. 0. 0. -1.09 0. 0. 0. 0. 0. )
|
|
BODY603_NUT_PREC_PM = ( 0. 0. 0. -9.60 2.23 0. 0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
Dione
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY604_POLE_RA = ( 40.66 -0.036 0. )
|
|
BODY604_POLE_DEC = ( 83.52 -0.004 0. )
|
|
BODY604_PM = ( 357.00 131.5349316 0. )
|
|
BODY604_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Rhea
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY605_POLE_RA = ( 40.38 -0.036 0. )
|
|
BODY605_POLE_DEC = ( 83.55 -0.004 0. )
|
|
BODY605_PM = ( 235.16 79.6900478 0. )
|
|
BODY605_LONG_AXIS = ( 0. )
|
|
|
|
BODY605_NUT_PREC_RA = ( 0. 0. 0. 0. 0. 3.10 0. 0. 0. )
|
|
BODY605_NUT_PREC_DEC = ( 0. 0. 0. 0. 0. -0.35 0. 0. 0. )
|
|
BODY605_NUT_PREC_PM = ( 0. 0. 0. 0. 0. -3.08 0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Titan
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY606_POLE_RA = ( 36.41 -0.036 0. )
|
|
BODY606_POLE_DEC = ( 83.94 -0.004 0. )
|
|
BODY606_PM = ( 189.64 22.5769768 0. )
|
|
BODY606_LONG_AXIS = ( 0. )
|
|
|
|
BODY606_NUT_PREC_RA = ( 0. 0. 0. 0. 0. 0. 2.66 0. 0 )
|
|
BODY606_NUT_PREC_DEC = ( 0. 0. 0. 0. 0. 0. -0.30 0. 0 )
|
|
BODY606_NUT_PREC_PM = ( 0. 0. 0. 0. 0. 0. -2.64 0. 0 )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Hyperion
|
|
|
|
The IAU report does not give an orientation model for Hyperion.
|
|
Hyperion's rotation is in chaotic and is not predictable for
|
|
long periods.
|
|
|
|
|
|
Iapetus
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY608_POLE_RA = ( 318.16 -3.949 0. )
|
|
BODY608_POLE_DEC = ( 75.03 -1.143 0. )
|
|
BODY608_PM = ( 350.20 4.5379572 0. )
|
|
BODY608_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Phoebe
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY609_POLE_RA = ( 355.00 0. 0. )
|
|
BODY609_POLE_DEC = ( 68.70 0. 0. )
|
|
BODY609_PM = ( 304.70 930.8338720 0. )
|
|
BODY609_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
Janus
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY610_POLE_RA = ( 40.58 -0.036 0. )
|
|
BODY610_POLE_DEC = ( 83.52 -0.004 0. )
|
|
BODY610_PM = ( 58.83 518.2359876 0. )
|
|
BODY610_LONG_AXIS = ( 0. )
|
|
|
|
BODY610_NUT_PREC_RA = ( 0. -1.623 0. 0. 0. 0. 0. 0. 0.023 )
|
|
BODY610_NUT_PREC_DEC = ( 0. -0.183 0. 0. 0. 0. 0. 0. 0.001 )
|
|
BODY610_NUT_PREC_PM = ( 0. 1.613 0. 0. 0. 0. 0. 0. -0.023 )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Epimetheus
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY611_POLE_RA = ( 40.58 -0.036 0. )
|
|
BODY611_POLE_DEC = ( 83.52 -0.004 0. )
|
|
BODY611_PM = ( 293.87 518.4907239 0. )
|
|
BODY611_LONG_AXIS = ( 0. )
|
|
|
|
BODY611_NUT_PREC_RA = ( -3.153 0. 0. 0. 0. 0. 0. 0.086 0. )
|
|
BODY611_NUT_PREC_DEC = ( -0.356 0. 0. 0. 0. 0. 0. 0.005 0. )
|
|
BODY611_NUT_PREC_PM = ( 3.133 0. 0. 0. 0. 0. 0. -0.086 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Helene
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY612_POLE_RA = ( 40.85 -0.036 0. )
|
|
BODY612_POLE_DEC = ( 83.34 -0.004 0. )
|
|
BODY612_PM = ( 245.12 131.6174056 0. )
|
|
BODY612_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Telesto
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY613_POLE_RA = ( 50.51 -0.036 0. )
|
|
BODY613_POLE_DEC = ( 84.06 -0.004 0. )
|
|
BODY613_PM = ( 56.88 190.6979332 0. )
|
|
BODY613_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Calypso
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY614_POLE_RA = ( 36.41 -0.036 0. )
|
|
BODY614_POLE_DEC = ( 85.04 -0.004 0. )
|
|
BODY614_PM = ( 153.51 190.6742373 0. )
|
|
BODY614_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Atlas
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY615_POLE_RA = ( 40.58 -0.036 0. )
|
|
BODY615_POLE_DEC = ( 83.53 -0.004 0. )
|
|
BODY615_PM = ( 137.88 598.3060000 0. )
|
|
BODY615_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Prometheus
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY616_POLE_RA = ( 40.58 -0.036 )
|
|
BODY616_POLE_DEC = ( 83.53 -0.004 )
|
|
BODY616_PM = ( 296.14 587.289000 )
|
|
BODY616_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Pandora
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY617_POLE_RA = ( 40.58 -0.036 0. )
|
|
BODY617_POLE_DEC = ( 83.53 -0.004 0. )
|
|
BODY617_PM = ( 162.92 572.7891000 0. )
|
|
BODY617_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Pan
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY618_POLE_RA = ( 40.6 -0.036 0. )
|
|
BODY618_POLE_DEC = ( 83.5 -0.004 0. )
|
|
BODY618_PM = ( 48.8 626.0440000 0. )
|
|
BODY618_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
|
|
|
|
Satellites of Uranus
|
|
|
|
|
|
|
|
Ariel
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY701_POLE_RA = ( 257.43 0. 0. )
|
|
BODY701_POLE_DEC = ( -15.10 0. 0. )
|
|
BODY701_PM = ( 156.22 -142.8356681 0. )
|
|
BODY701_LONG_AXIS = ( 0. )
|
|
|
|
BODY701_NUT_PREC_RA = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0. 0. 0.29 )
|
|
|
|
BODY701_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0. 0. 0.28 )
|
|
|
|
BODY701_NUT_PREC_PM = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0. 0.05 0.08 )
|
|
\begintext
|
|
|
|
|
|
|
|
Umbriel
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY702_POLE_RA = ( 257.43 0. 0. )
|
|
BODY702_POLE_DEC = ( -15.10 0. 0. )
|
|
BODY702_PM = ( 108.05 -86.8688923 0. )
|
|
BODY702_LONG_AXIS = ( 0. )
|
|
|
|
BODY702_NUT_PREC_RA = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0. 0. 0. 0.21 )
|
|
|
|
BODY702_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0. 0. 0. 0.20 )
|
|
|
|
BODY702_NUT_PREC_PM = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0. -0.09 0. 0.06 )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Titania
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY703_POLE_RA = ( 257.43 0. 0. )
|
|
BODY703_POLE_DEC = ( -15.10 0. 0. )
|
|
BODY703_PM = ( 77.74 -41.3514316 0. )
|
|
BODY703_LONG_AXIS = ( 0. )
|
|
|
|
BODY703_NUT_PREC_RA = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0. 0. 0. 0. 0.29 )
|
|
|
|
BODY703_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0. 0. 0. 0. 0.28 )
|
|
|
|
BODY703_NUT_PREC_PM = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0. 0. 0. 0. 0.08 )
|
|
\begintext
|
|
|
|
|
|
|
|
Oberon
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY704_POLE_RA = ( 257.43 0. 0. )
|
|
BODY704_POLE_DEC = ( -15.10 0. 0. )
|
|
BODY704_PM = ( 6.77 -26.7394932 0. )
|
|
BODY704_LONG_AXIS = ( 0. )
|
|
|
|
|
|
BODY704_NUT_PREC_RA = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0.16 )
|
|
|
|
BODY704_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0.16 )
|
|
|
|
BODY704_NUT_PREC_PM = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0. 0.04 )
|
|
\begintext
|
|
|
|
|
|
|
|
Miranda
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
|
|
BODY705_POLE_RA = ( 257.43 0. 0. )
|
|
BODY705_POLE_DEC = ( -15.08 0. 0. )
|
|
BODY705_PM = ( 30.70 -254.6906892 0. )
|
|
BODY705_LONG_AXIS = ( 0. )
|
|
|
|
BODY705_NUT_PREC_RA = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
4.41 0. 0. 0. 0.
|
|
0. -0.04 0. )
|
|
|
|
BODY705_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
4.25 0. 0. 0. 0.
|
|
0. -0.02 0. )
|
|
|
|
BODY705_NUT_PREC_PM = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
1.15 -1.27 0. 0. 0.
|
|
0. -0.09 0.15 )
|
|
\begintext
|
|
|
|
|
|
|
|
Cordelia
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY706_POLE_RA = ( 257.31 0. 0. )
|
|
BODY706_POLE_DEC = ( -15.18 0. 0. )
|
|
BODY706_PM = ( 127.69 -1074.5205730 0. )
|
|
BODY706_LONG_AXIS = ( 0. )
|
|
|
|
BODY706_NUT_PREC_RA = ( -0.15 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY706_NUT_PREC_DEC = ( 0.14 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY706_NUT_PREC_PM = ( -0.04 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Ophelia
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY707_POLE_RA = ( 257.31 0. 0. )
|
|
BODY707_POLE_DEC = ( -15.18 0. 0. )
|
|
BODY707_PM = ( 130.35 -956.4068150 0. )
|
|
BODY707_LONG_AXIS = ( 0. )
|
|
|
|
BODY707_NUT_PREC_RA = ( 0. -0.09 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY707_NUT_PREC_DEC = ( 0. 0.09 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY707_NUT_PREC_PM = ( 0. -0.03 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Bianca
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY708_POLE_RA = ( 257.31 0. 0. )
|
|
BODY708_POLE_DEC = ( -15.18 0. 0. )
|
|
BODY708_PM = ( 105.46 -828.3914760 0. )
|
|
BODY708_LONG_AXIS = ( 0. )
|
|
|
|
BODY708_NUT_PREC_RA = ( 0. 0. -0.16 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY708_NUT_PREC_DEC = ( 0. 0. 0.16 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY708_NUT_PREC_PM = ( 0. 0. -0.04 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Cressida
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
|
|
BODY709_POLE_RA = ( 257.31 0. 0. )
|
|
BODY709_POLE_DEC = ( -15.18 0. 0. )
|
|
BODY709_PM = ( 59.16 -776.5816320 0. )
|
|
BODY709_LONG_AXIS = ( 0. )
|
|
|
|
|
|
BODY709_NUT_PREC_RA = ( 0. 0. 0. -0.04 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
|
|
BODY709_NUT_PREC_DEC = ( 0. 0. 0. 0.04 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
|
|
BODY709_NUT_PREC_PM = ( 0. 0. 0. -0.01 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Desdemona
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY710_POLE_RA = ( 257.31 0. 0. )
|
|
BODY710_POLE_DEC = ( -15.18 0. 0. )
|
|
BODY710_PM = ( 95.08 -760.0531690 0. )
|
|
BODY710_LONG_AXIS = ( 0. )
|
|
|
|
BODY710_NUT_PREC_RA = ( 0. 0. 0. 0. -0.17
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY710_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.16
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY710_NUT_PREC_PM = ( 0. 0. 0. 0. -0.04
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Juliet
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY711_POLE_RA = ( 257.31 0. 0. )
|
|
BODY711_POLE_DEC = ( -15.18 0. 0. )
|
|
BODY711_PM = ( 302.56 -730.1253660 0. )
|
|
BODY711_LONG_AXIS = ( 0. )
|
|
|
|
BODY711_NUT_PREC_RA = ( 0. 0. 0. 0. 0.
|
|
-0.06 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY711_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.
|
|
0.06 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY711_NUT_PREC_PM = ( 0. 0. 0. 0. 0.
|
|
-0.02 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Portia
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY712_POLE_RA = ( 257.31 0. 0. )
|
|
BODY712_POLE_DEC = ( -15.18 0. 0. )
|
|
BODY712_PM = ( 25.03 -701.4865870 0. )
|
|
BODY712_LONG_AXIS = ( 0. )
|
|
|
|
BODY712_NUT_PREC_RA = ( 0. 0. 0. 0. 0.
|
|
0. -0.09 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY712_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.
|
|
0. 0.09 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY712_NUT_PREC_PM = ( 0. 0. 0. 0. 0.
|
|
0. -0.02 0. 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Rosalind
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY713_POLE_RA = ( 257.31 0. 0. )
|
|
BODY713_POLE_DEC = ( -15.18 0. 0. )
|
|
BODY713_PM = ( 314.90 -644.6311260 0. )
|
|
BODY713_LONG_AXIS = ( 0. )
|
|
|
|
BODY713_NUT_PREC_RA = ( 0. 0. 0. 0. 0.
|
|
0. 0. -0.29 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY713_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0.28 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY713_NUT_PREC_PM = ( 0. 0. 0. 0. 0.
|
|
0. 0. -0.08 0. 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Belinda
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY714_POLE_RA = ( 257.31 0. 0. )
|
|
BODY714_POLE_DEC = ( -15.18 0. 0. )
|
|
BODY714_PM = ( 297.46 -577.3628170 0. )
|
|
BODY714_LONG_AXIS = ( 0. )
|
|
|
|
BODY714_NUT_PREC_RA = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. -0.03 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY714_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0.03 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY714_NUT_PREC_PM = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. -0.01 0.
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
\begintext
|
|
|
|
|
|
|
|
Puck
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY715_POLE_RA = ( 257.31 0. 0. )
|
|
BODY715_POLE_DEC = ( -15.18 0. 0. )
|
|
BODY715_PM = ( 91.24 -472.5450690 0. )
|
|
BODY715_LONG_AXIS = ( 0. )
|
|
|
|
BODY715_NUT_PREC_RA = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. -0.33
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY715_NUT_PREC_DEC = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. 0.31
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
BODY715_NUT_PREC_PM = ( 0. 0. 0. 0. 0.
|
|
0. 0. 0. 0. -0.09
|
|
0. 0. 0. 0. 0.
|
|
0. 0. 0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
|
|
Satellites of Neptune
|
|
|
|
|
|
Triton
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY801_POLE_RA = ( 299.36 0. 0. )
|
|
BODY801_POLE_DEC = ( 41.17 0. 0. )
|
|
BODY801_PM = ( 296.53 -61.2572637 0. )
|
|
BODY801_LONG_AXIS = ( 0. )
|
|
|
|
|
|
BODY801_NUT_PREC_RA = ( 0. 0. 0. 0.
|
|
0. 0. 0. -32.35
|
|
0. -6.28 -2.08 -0.74
|
|
-0.28 -0.11 -0.07 -0.02
|
|
-0.01 )
|
|
|
|
|
|
BODY801_NUT_PREC_DEC = ( 0. 0. 0. 0.
|
|
0. 0. 0. 22.55
|
|
0. 2.10 0.55 0.16
|
|
0.05 0.02 0.01 0.
|
|
0. )
|
|
|
|
|
|
BODY801_NUT_PREC_PM = ( 0. 0. 0. 0.
|
|
0. 0. 0. 22.25
|
|
0. 6.73 2.05 0.74
|
|
0.28 0.11 0.05 0.02
|
|
0.01 )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
|
|
Nereid
|
|
|
|
Old values:
|
|
|
|
Values are from the 1988 IAU report. Note that this
|
|
rotation model pre-dated the 1989 Voyager 2 Neptune
|
|
encounter.
|
|
|
|
|
|
body802_pole_ra = ( 273.48 0. 0. )
|
|
body802_pole_dec = ( 67.22 0. 0. )
|
|
body802_pm = ( 237.22 0.9996465 0. )
|
|
body802_long_axis = ( 0. )
|
|
|
|
|
|
The report seems to have a typo: in the nut_prec_ra expression,
|
|
where the report gives -0.51 sin 3N3, we use -0.51 3N2.
|
|
|
|
body802_nut_prec_ra = ( 0. -17.81
|
|
0. 0. 0. 0.
|
|
0. 0. 0.
|
|
2.56 -0.51 0.11 -0.03 )
|
|
|
|
body802_nut_prec_dec = ( 0. -6.67
|
|
0. 0. 0. 0.
|
|
0. 0. 0.
|
|
0.47 -0.07 0.01 )
|
|
|
|
body802_nut_prec_pm = ( 0. 16.48
|
|
0. 0. 0. 0.
|
|
0. 0. 0.
|
|
-2.57 0.51 -0.11 0.02 )
|
|
|
|
|
|
|
|
Current values:
|
|
|
|
The 2000 report [2] states that values for Nereid are not
|
|
given because Nereid is not in synchronous rotation with Neptune
|
|
(note (j), p.99).
|
|
|
|
|
|
|
|
Naiad
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
|
|
\begindata
|
|
|
|
BODY803_POLE_RA = ( 299.36 0. 0. )
|
|
BODY803_POLE_DEC = ( 43.36 0. 0. )
|
|
BODY803_PM = ( 254.06 +1222.8441209 0. )
|
|
BODY803_LONG_AXIS = ( 0. )
|
|
|
|
|
|
BODY803_NUT_PREC_RA = ( 0.70 -6.49 0. 0.
|
|
0. 0. 0. 0.
|
|
0.25 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY803_NUT_PREC_DEC = ( -0.51 -4.75 0. 0.
|
|
0. 0. 0. 0.
|
|
0.09 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY803_NUT_PREC_PM = ( -0.48 4.40 0. 0.
|
|
0. 0. 0. 0.
|
|
-0.27 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
|
|
Thalassa
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY804_POLE_RA = ( 299.36 0. 0. )
|
|
BODY804_POLE_DEC = ( 43.45 0. 0. )
|
|
BODY804_PM = ( 102.06 1155.7555612 0. )
|
|
BODY804_LONG_AXIS = ( 0. )
|
|
|
|
|
|
BODY804_NUT_PREC_RA = ( 0.70 0. -0.28 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
|
|
BODY804_NUT_PREC_DEC = ( -0.51 0. -0.21 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY804_NUT_PREC_PM = ( -0.48 0. 0.19 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
Despina
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
|
|
\begindata
|
|
|
|
BODY805_POLE_RA = ( 299.36 0. 0. )
|
|
BODY805_POLE_DEC = ( 43.45 0. 0. )
|
|
BODY805_PM = ( 306.51 +1075.7341562 0. )
|
|
BODY805_LONG_AXIS = ( 0. )
|
|
|
|
|
|
BODY805_NUT_PREC_RA = ( 0.70 0. 0. -0.09
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY805_NUT_PREC_DEC = ( -0.51 0. 0. -0.07
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY805_NUT_PREC_PM = ( -0.49 0. 0. 0.06
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
\begintext
|
|
|
|
|
|
|
|
Galatea
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
|
|
\begindata
|
|
|
|
BODY806_POLE_RA = ( 299.36 0. 0. )
|
|
BODY806_POLE_DEC = ( 43.43 0. 0. )
|
|
BODY806_PM = ( 258.09 839.6597686 0. )
|
|
BODY806_LONG_AXIS = ( 0. )
|
|
|
|
|
|
BODY806_NUT_PREC_RA = ( 0.70 0. 0. 0.
|
|
-0.07 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY806_NUT_PREC_DEC = ( -0.51 0. 0. 0.
|
|
-0.05 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY806_NUT_PREC_PM = ( -0.48 0. 0. 0.
|
|
0.05 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
\begintext
|
|
|
|
|
|
Larissa
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY807_POLE_RA = ( 299.36 0. 0. )
|
|
BODY807_POLE_DEC = ( 43.41 0. 0. )
|
|
BODY807_PM = ( 179.41 +649.0534470 0. )
|
|
BODY807_LONG_AXIS = ( 0. )
|
|
|
|
|
|
BODY807_NUT_PREC_RA = ( 0.70 0. 0. 0.
|
|
0. -0.27 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY807_NUT_PREC_DEC = ( -0.51 0. 0. 0.
|
|
0. -0.20 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY807_NUT_PREC_PM = ( -0.48 0. 0. 0.
|
|
0. 0.19 0. 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
\begintext
|
|
|
|
|
|
|
|
Proteus
|
|
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY808_POLE_RA = ( 299.27 0. 0. )
|
|
BODY808_POLE_DEC = ( 42.91 0. 0. )
|
|
BODY808_PM = ( 93.38 +320.7654228 0. )
|
|
BODY808_LONG_AXIS = ( 0. )
|
|
|
|
|
|
BODY808_NUT_PREC_RA = ( 0.70 0. 0. 0.
|
|
0. 0. -0.05 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY808_NUT_PREC_DEC = ( -0.51 0. 0. 0.
|
|
0. 0. -0.04 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
BODY808_NUT_PREC_PM = ( -0.48 0. 0. 0.
|
|
0. 0. 0.04 0.
|
|
0. 0. 0. 0.
|
|
0. 0. 0. 0.
|
|
0. )
|
|
|
|
\begintext
|
|
|
|
|
|
|
|
|
|
|
|
Satellites of Pluto
|
|
|
|
Charon
|
|
|
|
Old values:
|
|
|
|
Values are unchanged in the 2000 IAU report.
|
|
|
|
Current values:
|
|
|
|
\begindata
|
|
|
|
BODY901_POLE_RA = ( 313.02 0. 0. )
|
|
BODY901_POLE_DEC = ( 9.09 0. 0. )
|
|
BODY901_PM = ( 56.77 -56.3623195 0. )
|
|
BODY901_LONG_AXIS = ( 0. )
|
|
|
|
\begintext
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Orientation constants for Asteroids Gaspra, Ida, Vesta, and Eros
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--------------------------------------------------------
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Gaspra
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY9511010_POLE_RA = ( 9.47 0. 0. )
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BODY9511010_POLE_DEC = ( 26.70 0. 0. )
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BODY9511010_PM = ( 83.67 1226.9114850 0. )
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BODY9511010_LONG_AXIS = ( 0. )
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\begintext
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Ida
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY2431010_POLE_RA = ( 348.76 0. 0. )
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BODY2431010_POLE_DEC = ( 87.12 0. 0. )
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BODY2431010_PM = ( 265.95 -1864.6280070 0. )
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BODY2431010_LONG_AXIS = ( 0. )
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\begintext
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Vesta
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Current values:
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\begindata
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BODY2000004_POLE_RA = ( 301. 0. 0. )
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BODY2000004_POLE_DEC = ( 41. 0. 0. )
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BODY2000004_PM = ( 292. 1617.332776 0. )
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BODY2000004_LONG_AXIS = ( 0. )
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\begintext
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Eros
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Current values:
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\begindata
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BODY2000433_POLE_RA = ( 11.35 0. 0. )
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BODY2000433_POLE_DEC = ( 17.22 0. 0. )
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BODY2000433_PM = ( 326.07 1639.38864745 0. )
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BODY2000433_LONG_AXIS = ( 0. )
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\begintext
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Radii of Sun and Planets
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--------------------------------------------------------
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Sun
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Value for the Sun is from the [7], page K7.
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\begindata
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BODY10_RADII = ( 696000. 696000. 696000. )
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\begintext
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Mercury
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY199_RADII = ( 2439.7 2439.7 2439.7 )
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\begintext
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Venus
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY299_RADII = ( 6051.8 6051.8 6051.8 )
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\begintext
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Earth
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY399_RADII = ( 6378.14 6378.14 6356.75 )
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\begintext
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Mars
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Old values:
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body499_radii = ( 3397. 3397. 3375. )
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Current values:
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The IAU report gives separate values for the north and south
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polar radii:
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north: 3373.19
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south: 3379.21
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We use the average of these values as the polar radius for
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the triaxial model.
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\begindata
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BODY499_RADII = ( 3396.19 3396.19 3376.20 )
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\begintext
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Jupiter
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY599_RADII = ( 71492 71492 66854 )
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\begintext
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Saturn
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY699_RADII = ( 60268 60268 54364 )
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\begintext
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Uranus
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY799_RADII = ( 25559 25559 24973 )
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\begintext
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Neptune
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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(Values are for the 1 bar pressure level.)
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\begindata
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BODY899_RADII = ( 24764 24764 24341 )
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\begintext
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Pluto
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY999_RADII = ( 1195 1195 1195 )
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\begintext
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Radii of Satellites
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--------------------------------------------------------
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Moon
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY301_RADII = ( 1737.4 1737.4 1737.4 )
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\begintext
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Satellites of Mars
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY401_RADII = ( 13.4 11.2 9.2 )
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BODY402_RADII = ( 7.5 6.1 5.2 )
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\begintext
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Satellites of Jupiter
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Old values:
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Old values for Io, Europa, Ganymede, Callisto and Amalthea.
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These are from the 1997 IAU report.
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body501_radii = ( 1826. 1815. 1812. )
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body502_radii = ( 1562. 1560. 1559. )
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body503_radii = ( 2635. 2633. 2633. )
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body504_radii = ( 2409. 2409. 2409. )
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body505_radii = ( 131. 73. 67. )
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body506_radii = ( 85 85 85 )
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body507_radii = ( 40 40 40 )
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body508_radii = ( 18 18 18 )
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body509_radii = ( 14 14 14 )
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body510_radii = ( 12 12 12 )
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body511_radii = ( 15 15 15 )
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body512_radii = ( 10 10 10 )
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body513_radii = ( 5 5 5 )
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body514_radii = ( 50 50 50 )
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body515_radii = ( 13 10 8 )
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body516_radii = ( 20 20 20 )
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Current values:
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\begindata
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BODY501_RADII = ( 1829.4 1819.3 1815.7 )
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BODY502_RADII = ( 1564.13 1561.23 1560.93 )
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BODY503_RADII = ( 2632.4 2632.29 2632.35 )
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BODY504_RADII = ( 2409.4 2409.2 2409.3 )
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BODY505_RADII = ( 125 73 64 )
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\begintext
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Only mean radii are available in the 2000 IAU report for bodies
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506-513.
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\begindata
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BODY506_RADII = ( 85 85 85 )
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BODY507_RADII = ( 40 40 40 )
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BODY508_RADII = ( 18 18 18 )
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BODY509_RADII = ( 14 14 14 )
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BODY510_RADII = ( 12 12 12 )
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BODY511_RADII = ( 15 15 15 )
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BODY512_RADII = ( 10 10 10 )
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BODY513_RADII = ( 5 5 5 )
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BODY514_RADII = ( 58 49 42 )
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BODY515_RADII = ( 10 8 7 )
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\begintext
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The value for the second radius for body 516 is not given in
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2000 IAU report. The values given are:
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BODY516_RADII = ( 30 --- 20 )
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For use within the SPICE system, we use only the mean radius.
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\begindata
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BODY516_RADII = ( 21.5 21.5 21.5 )
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\begintext
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Satellites of Saturn
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Old values:
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body601_radii = ( 210.3 197.4 192.6 )
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body602_radii = ( 256.2 247.3 244.0 )
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body603_radii = ( 535.6 528.2 525.8 )
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body604_radii = ( 560. 560. 560. )
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body605_radii = ( 764. 764. 764. )
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body606_radii = ( 2575. 2575. 2575. )
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body607_radii = ( 180. 140. 112.5 )
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body608_radii = ( 718. 718. 718. )
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body609_radii = ( 115. 110. 105. )
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body610_radii = ( 97. 95. 77. )
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body611_radii = ( 69. 55. 55. )
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body612_radii = ( 16 16 16 )
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body613_radii = ( 15 12.5 7.5 )
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body614_radii = ( 15 8 8 )
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body615_radii = ( 18.5 17.2 13.5 )
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body616_radii = ( 74 50 34 )
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body617_radii = ( 55 44 31 )
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body618_radii = ( 10 10 10 )
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Current values:
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\begindata
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BODY601_RADII = ( 209.1 196.2 191.4 )
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BODY602_RADII = ( 256.3 247.3 244.6 )
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BODY603_RADII = ( 535.6 528.2 525.8 )
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BODY604_RADII = ( 560 560 560 )
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BODY605_RADII = ( 764 764 764 )
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BODY606_RADII = ( 2575 2575 2575 )
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BODY607_RADII = ( 164 130 107 )
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BODY608_RADII = ( 718 718 718 )
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BODY609_RADII = ( 115 110 105 )
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BODY610_RADII = ( 97.0 95.0 77.0 )
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BODY611_RADII = ( 69.0 55.0 55.0 )
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\begintext
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Only the first equatorial radius for Helene (body 612) is given in the
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2000 IAU report:
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BODY612_RADII = ( 17.5 --- --- )
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The mean radius is 16km; we use this radius for all three axes, as
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we do for the satellites for which only the mean radius is available.
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\begindata
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BODY612_RADII = ( 16 16 16 )
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BODY613_RADII = ( 15 12.5 7.5 )
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BODY614_RADII = ( 15.0 8.0 8.0 )
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BODY615_RADII = ( 18.5 17.2 13.5 )
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BODY616_RADII = ( 74.0 50.0 34.0 )
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BODY617_RADII = ( 55.0 44.0 31.0 )
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\begintext
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For Pan, only a mean radius is given in the 2000 report.
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\begindata
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BODY618_RADII = ( 10 10 10 )
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\begintext
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Satellites of Uranus
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY701_RADII = ( 581.1 577.9 577.7 )
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BODY702_RADII = ( 584.7 584.7 584.7 )
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BODY703_RADII = ( 788.9 788.9 788.9 )
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BODY704_RADII = ( 761.4 761.4 761.4 )
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BODY705_RADII = ( 240.4 234.2 232.9 )
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\begintext
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The 2000 report gives only mean radii for satellites 706--715.
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\begindata
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BODY706_RADII = ( 13 13 13 )
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BODY707_RADII = ( 15 15 15 )
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BODY708_RADII = ( 21 21 21 )
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BODY709_RADII = ( 31 31 31 )
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BODY710_RADII = ( 27 27 27 )
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BODY711_RADII = ( 42 42 42 )
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BODY712_RADII = ( 54 54 54 )
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BODY713_RADII = ( 27 27 27 )
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BODY714_RADII = ( 33 33 33 )
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BODY715_RADII = ( 77 77 77 )
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\begintext
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Satellites of Neptune
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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The 2000 report gives mean radii only for bodies 801-806.
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\begindata
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BODY801_RADII = ( 1352.6 1352.6 1352.6 )
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BODY802_RADII = ( 170 170 170 )
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BODY803_RADII = ( 29 29 29 )
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BODY804_RADII = ( 40 40 40 )
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BODY805_RADII = ( 74 74 74 )
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BODY806_RADII = ( 79 79 79 )
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\begintext
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The second equatorial radius for Larissa is not given in the 2000
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report. The available values are:
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BODY807_RADII = ( 104 --- 89 )
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For use within the SPICE system, we use only the mean radius.
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\begindata
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BODY807_RADII = ( 96 96 96 )
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BODY808_RADII = ( 218 208 201 )
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\begintext
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Satellites of Pluto
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Old values:
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Values are unchanged in the 2000 IAU report.
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Current values:
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\begindata
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BODY901_RADII = ( 593 593 593 )
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\begintext
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Radii of Selected Asteroids
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--------------------------------------------------------
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Gaspra
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Current values:
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\begindata
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BODY9511010_RADII = ( 9.1 5.2 4.4 )
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\begintext
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Ida
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Current values:
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\begindata
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BODY2431010_RADII = ( 26.8 12.0 7.6 )
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\begintext
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Kleopatra
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Current values:
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\begindata
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BODY2000216_RADII = ( 108.5 47 40.5 )
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\begintext
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Eros
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Current values:
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\begindata
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BODY2000433_RADII = ( 7.311 7.311 7.311 )
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\begintext
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===========================================================================
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End of file pck00008.tpc
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===========================================================================
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