SGP4 Satellite Orbit Propagator

The `sgp4` Python library provides a highly accurate implementation of the SGP4 and SDP4 orbital propagation algorithms, as described in the 2020 revision of the Spacetrack Report #3. It allows users to track Earth satellites given their Two-Line Element (TLE) data, predicting their position and velocity at specific times. The library is actively maintained, with version 2.25 being the latest, and typically sees several releases per year addressing minor bugs and precision improvements.