USA 76

USA 76 is an active satellite operated by United States, launched on 1991-11-08 from Vandenberg SFB, California. With over 35 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Low Earth Orbit (LEO) at altitudes between 381 km and 1,692 km with an inclination of 63.3°. It travels at approximately 26,408 km/h (7.34 km/s), completing one full orbit every 106 minutes — that’s roughly 13.60 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~500–1,000 years. Orbital Radar tracks USA 76 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

USA 76 orbits at an average altitude of 1,037 km in the upper LEO band, where atmospheric drag is negligible and objects can persist for centuries to millennia. This altitude is used by broadband constellations like OneWeb and by scientific missions requiring stable orbits far from the densest debris bands. Within ±50 km of USA 76’s average altitude, there are currently 186 active payloads and 519 tracked debris or rocket body fragments — notable neighbours include ONEWEB-0041. With an inclination of 63.3°, USA 76 passes over latitudes between 63.3°N and 63.3°S, covering most populated land masses in both hemispheres. This mid-inclination band balances global coverage with efficient launch energy requirements. United States operates approximately 12,360 active satellites in total, of which 18 share a similar altitude band with USA 76.