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COSMOS 945

NORAD 10291 Payload LEO 1977-079G ● Active
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Altitude (km)
Speed (km/s)
Latitude
Longitude
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🛰️ Orbital Parameters
Perigee
1461 km
Apogee
1491 km
Inclination
74.0°
Period
115.5 min
Mean Motion
12.47249195 rev/day
TLE Epoch
2026-05-08 11:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude1,476 km
Orbital Velocity25,658 km/h
Velocity7.13 km/s
Orbital Period115 minutes
Orbits / Day12.47
Eccentricity0.0019
Semi-Major Axis7,847 km
Est. Orbital LifetimeThousands of years
🚀 Launch & Identity
Country / Operator
🇷🇺 Russia (CIS)
Launch Date
1977-08-24
Launch Site
PKMTR
Int'l Designator
1977-079G
Object Type
Payload
RCS Size
Medium (0.1–1 m²)
📖 About This Object
COSMOS 945 is an active satellite operated by Russia (CIS), launched on 1977-08-24 from PKMTR. With over 49 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Low Earth Orbit (LEO) at altitudes between 1,461 km and 1,491 km with an inclination of 74.0°. It travels at approximately 25,658 km/h (7.13 km/s), completing one full orbit every 115 minutes — that’s roughly 12.47 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is thousands of years. Orbital Radar tracks COSMOS 945 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.
🌍 Orbit Context
COSMOS 945 orbits in the upper reaches of Low Earth Orbit, above 1,000 km. At this altitude, atmospheric drag is negligible and objects can remain in orbit for thousands of years without active deorbiting. This region is used by satellite broadband constellations like OneWeb and by scientific missions that need stable, long-duration orbits away from the densest debris bands. The high inclination typical at this altitude provides near-global coverage.
❓ Frequently Asked Questions
COSMOS 945 orbits in Low Earth Orbit (LEO) at altitudes between 1,461 km (perigee) and 1,491 km (apogee), with an average altitude of approximately 1,476 km. It completes one orbit every 115 minutes, travelling at approximately 25,658 km/h (15,943 mph).
COSMOS 945 is operated by Russia (CIS). It is catalogued by the U.S. Space Surveillance Network under NORAD ID 10291. You can track COSMOS 945 in real time on Orbital Radar’s live tracker.
COSMOS 945 was launched on 1977-08-24 from PKMTR. At its current altitude, the estimated remaining orbital lifetime is: thousands of years.
Yes — Orbital Radar tracks COSMOS 945 (NORAD ID 10291) using the latest TLE (two-line element set) data from Space-Track and CelesTrak. Open the live tracker to see its current position, altitude, speed and orbital path updated in real time.
COSMOS 945 travels at approximately 25,658 km/h (15,943 mph) — roughly 7.13 km/s. It completes 12.47 orbits per day, meaning the crew or instruments aboard (if any) would experience approximately 25 sunrises and sunsets every 24 hours.
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