TUBSAT B

TUBSAT B is an active satellite operated by Germany, launched on 1994-01-25 from PKMTR. With over 32 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Low Earth Orbit (LEO) at altitudes between 1,184 km and 1,208 km with an inclination of 82.6°. It travels at approximately 26,128 km/h (7.26 km/s), completing one full orbit every 109 minutes — that’s roughly 13.17 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~500–1,000 years. Orbital Radar tracks TUBSAT B in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

TUBSAT B orbits at an average altitude of 1,196 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 TUBSAT B’s average altitude, there are currently 843 active payloads and 207 tracked debris or rocket body fragments — notable neighbours include ONEWEB-0012, ONEWEB-0010, ONEWEB-0008. With an inclination of 82.6°, TUBSAT B passes over latitudes between 82.6°N and 82.6°S, providing near-global coverage including the polar regions. Polar and near-polar orbits are used for reconnaissance, weather monitoring and Earth-observation missions that need to image every part of the planet. Germany operates approximately 80 active satellites in total, of which 2 share a similar altitude band with TUBSAT B.