Orbital & Satellites
Orbital elements and satellite passes — the ISS and other satellites via CelesTrak two-line elements and SGP4 propagation. Architecture-ready; the TLE feed and propagation are not yet wired.
- CelesTrak Orbital ElementsArchitecture-readyOrbital / satellites
CelesTrak publishes two-line orbital elements for thousands of satellites, from which passes over an observer can be computed by SGP4 propagation. Evaluated for Program CL and NOT connected: the host refused automated connections. The ISS is tracked instead from NASA's own operational ephemeris, which is a separate provider.
- NASA ISS Trajectory DataConnectedOrbital / satellites
NASA Johnson Space Center's Flight Operations Directorate publishes the International Space Station's operational trajectory openly: state vectors every four minutes in the mean equator and equinox of J2000, spanning fifteen days, in the CCSDS Orbit Ephemeris Message format. CONNECTED: the station's position, ground track and visible passes are computed from it.