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.
- Contributing to Skyfield.
- Skyfield package on the Python Package Index.
- Skyfield package on the Python Package Index.
- Issue tracker on GitHub.