Satellite positions are derived from publicly available Two-Line Element (TLE) sets generated by the United States Space Force and disseminated by Celestrak.
TLEs describe an orbit at a specific point in time and are widely used for satellite tracking, orbit propagation, and analysis.
The satellites shown include all spacecraft listed in Celestrak’s public active catalog. livesatelliteorbits.com maintains an internal mirror of Celestrak TLE data, which is served directly to this web application.