COSMOS 1375 DEB

COSMOS 1375 DEB is a tracked piece of space debris attributed to Russia (CIS), launched on 1982-06-06 from PKMTR. With over 44 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Low Earth Orbit (LEO) at altitudes between 979 km and 1,066 km with an inclination of 65.8°. It travels at approximately 26,433 km/h (7.34 km/s), completing one full orbit every 106 minutes — that’s roughly 13.64 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~500–1,000 years. As orbital debris, COSMOS 1375 DEB poses a potential collision risk to operational satellites in nearby orbits and is continuously monitored by the U.S. Space Surveillance Network and other tracking systems.

COSMOS 1375 DEB orbits at an average altitude of 1,023 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 1375 DEB’s average altitude, there are currently 279 active payloads and 688 tracked debris or rocket body fragments. With an inclination of 65.8°, COSMOS 1375 DEB passes over latitudes between 65.8°N and 65.8°S, covering most populated land masses in both hemispheres. This mid-inclination band balances global coverage with efficient launch energy requirements. Russia (CIS) operates approximately 1,285 active satellites in total, of which 125 share a similar altitude band with COSMOS 1375 DEB.