COSMOS 375

COSMOS 375 is an active satellite operated by PKO (Russia (CIS)), launched on 1970-10-30 from Baikonur Cosmodrome, Kazakhstan on the I2P launch. After more than 56 years in orbit, it is one of the longest-surviving objects in the space catalogue. It orbits in Low Earth Orbit (LEO) at altitudes between 558 km and 1,986 km with an inclination of 62.8°. It travels at approximately 25,998 km/h (7.22 km/s), completing one full orbit every 111 minutes — that’s roughly 12.97 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is thousands of years. Orbital Radar tracks COSMOS 375 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

COSMOS 375 orbits at an average altitude of 1,272 km in the uppermost reaches of Low Earth Orbit. At this altitude, orbital decay is effectively zero without active deorbiting, and coverage footprints are significantly larger than lower LEO, though at the cost of higher latency. Within ±50 km of COSMOS 375’s average altitude, there are currently 26 active payloads and 386 tracked debris or rocket body fragments — notable neighbours include ONEWEB-0013, ONEWEB-0033, ONEWEB-0047. This is a relatively sparse altitude band, containing less than 1% of all active satellites. With an inclination of 62.8°, COSMOS 375 passes over latitudes between 62.8°N and 62.8°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 1,553 active satellites in total, of which 5 share a similar altitude band with COSMOS 375.