JuliaSpace/SatelliteToolbox.jl

Astrodynamics and Spacecraft Toolkit. Features fast orbit prop, celestial precession, CCSDS parsing, RF parsing, fits image parsing, and more!

Oxidized Astrodynamics

Modular set of functions for SGP4 and SDP4 propagation of TLE and OMM.

Python version of the SGP4 satellite position library

Orbital and astronomy computations in python

OREKIT is a free low level space dynamics library written in Java. Please visit our Gitlab instance for issues and contributions: https://gitlab.orekit.org

Nyx is a high fidelity, fast, reliable and validated astrodynamics toolkit library written in Rust and available in Python

A thread-safe alternative to NASA SPICE toolkit, computing spacecraft, planetary, coordinate frame, instrument transformations, ground station visibility, and orbital elements. Engineered for high-throughput Python concurrent execution and flight software, with proven lunar flight heritage.

PyKEP is a scientific library providing basic tools for research in interplanetary trajectory design.