TELSTAR 4 (TELSTAR 402R)

TELSTAR 4 (TELSTAR 402R) is an active satellite operated by United States, launched on 1995-09-24 from Guiana Space Centre, Kourou. With over 31 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Geostationary Orbit (GEO) at altitudes between 35,774 km and 35,796 km with an inclination of 13.6°. It travels at approximately 11,070 km/h (3.07 km/s), completing one full orbit every ~24 hours (geosynchronous) — that’s roughly 1.00 orbits per day. At geostationary altitude, there is no meaningful atmospheric drag — this object will remain in orbit indefinitely unless actively deorbited. Orbital Radar tracks TELSTAR 4 (TELSTAR 402R) in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

TELSTAR 4 (TELSTAR 402R) occupies geostationary orbit at approximately 35,786 km above the equator, where its orbital period matches the Earth’s 24-hour rotation. From the ground, it appears to hover over a fixed point — ideal for broadcast television, weather monitoring and wideband communications. With an inclination of 13.6°, it traces a small figure-of-eight pattern relative to the equator rather than remaining perfectly stationary, which can indicate aging stationkeeping fuel or a deliberate inclined-orbit strategy. Within ±50 km of TELSTAR 4 (TELSTAR 402R)’s average altitude, there are currently 712 active payloads and 59 tracked debris or rocket body fragments — notable neighbours include ASTRA 1N, GOES 16, TDRS 13. United States operates approximately 12,360 active satellites in total, of which 146 share a similar altitude band with TELSTAR 4 (TELSTAR 402R).