COSMOS 1761

COSMOS 1761 is an active satellite operated by Russia (CIS), launched on 1986-07-05 from PKMTR on the Oko launch. With over 40 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Medium Earth Orbit (MEO) at altitudes between 5,162 km and 35,231 km with an inclination of 70.6°. It travels at approximately 13,944 km/h (3.87 km/s), completing one full orbit every 11 hours 59 minutes — that’s roughly 2.00 orbits per day. Its orbital eccentricity of 0.5659 gives it a noticeably elliptical path, with significant altitude variation between perigee and apogee. Orbital Radar tracks COSMOS 1761 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

COSMOS 1761 orbits at an average altitude of 20,197 km in Medium Earth Orbit, the region between LEO and GEO (2,000–35,786 km). MEO’s higher altitude gives each satellite a much larger ground footprint than LEO, meaning fewer spacecraft are needed for global coverage — but signal latency is higher and radiation from the Van Allen belts is a significant design constraint. Within ±50 km of COSMOS 1761’s average altitude, there are currently 104 active payloads and 14 tracked debris or rocket body fragments — notable neighbours include GPS BIIR-5 (PRN 22), GPS BIIR-8 (PRN 16), GPS BIIR-11 (PRN 19). With an inclination of 70.6°, COSMOS 1761 passes over latitudes between 70.6°N and 70.6°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 1,287 active satellites in total, of which 56 share a similar altitude band with COSMOS 1761.