COSMOS 1153

COSMOS 1153 is an active satellite operated by Russia (CIS), launched on 1980-01-25 from PKMTR. With over 46 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Low Earth Orbit (LEO) at altitudes between 959 km and 1,013 km with an inclination of 82.9°. It travels at approximately 26,498 km/h (7.36 km/s), completing one full orbit every 105 minutes — that’s roughly 13.74 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~100–500 years. Orbital Radar tracks COSMOS 1153 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

COSMOS 1153 orbits at an average altitude of 986 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 COSMOS 1153’s average altitude, there are currently 280 active payloads and 921 tracked debris or rocket body fragments. With an inclination of 82.9°, COSMOS 1153 passes over latitudes between 82.9°N and 82.9°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. Russia (CIS) operates approximately 1,285 active satellites in total, of which 157 share a similar altitude band with COSMOS 1153.