pyswisseph

The premium Open Source alternative to Skyfield

🎯 Best for:Developers building applications requiring precise planetary positions
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AGPL-3.0License

What is pyswisseph?

A Python extension providing access to the Swiss Ephemeris library for planetary position calculations. It enables high-precision astronomical and astrological computations based on JPL planetary data and Delta T corrections.

Tech Stack
CPhysics & Astronomy

Why pyswisseph?

  • High computational accuracy
  • Extensive historical data
  • Low memory footprint

Limitations

  • Complex C-binding installation
  • Steep learning curve
  • Limited documentation
3/1/2026
Last Update
99
Forks
24
Issues
AGPL-3.0
License
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Competitor Cost
-$1,440
/ year (est. based on Skyfield)
Self-Hosted
$0
/ year
Team Size10 Users
150+
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