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Welcome to the Skyfield Repository
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Skyfield is a pure-Python astronomy package
that is compatible with both Python 2 and 3
and makes it easy to generate high precision research-grade
positions for planets and Earth satellites.
::
from skyfield.api import load
planets = load('de421.bsp')
earth, mars = planets['earth'], planets['mars']
ts = load.timescale()
t = ts.now()
position = earth.at(t).observe(mars)
ra, dec, distance = position.radec()
print(ra)
print(dec)
print(distance)
The result:
::
10h 47m 56.24s
+09deg 03' 23.1"
2.33251 au
Skyfield’s only binary dependency is NumPy.
Once that is available, Skyfield can usually be installed with::
pip install skyfield
Here are the essential project links:
* `Home page and documentation
<http://rhodesmill.org/skyfield>`_.
* `Installing Skyfield
<http://rhodesmill.org/skyfield/installation.html>`_.
* `Contributing to Skyfield
<https://github.com/skyfielders/python-skyfield/blob/master/Contrib.rst>`_.
* `Skyfield package <https://pypi.python.org/pypi/skyfield>`_
on the Python Package Index.
* `Issue tracker
<https://github.com/brandon-rhodes/python-skyfield/issues>`_
on GitHub.
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