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 earth, mars, now
ra, dec, distance = earth(now()).observe(mars).radec()
print ra
print dec
print distance
09h 14m 50.35s
+17deg 13' 02.6"
2.18572863461 AU
Its only binary dependency is NumPy. Skyfield can usually be installed with:
pip install skyfield
Here are the essential project links:
- Home page and documentation.
- Skyfield package on the Python Package Index.
- Issue tracker on GitHub.