Spacecraft information: COSMOS 939
| Launched | 23 August 1977 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 10282 |
| COSPAR ID | 1977-079A |
| Observing |
Current orbital elements
| Inclination | 74.026° |
| Eccentricity | 0.00192 |
| RA ascending node | 1.580 hr |
| Argument perigee | 15.483° |
| Mean anomaly | 50.358° |
| Orbital period | 114.806 min |
| Epoch of osculation | 12 Dec 2025, 05:51 |
Derived Quantities
| Min Altitude | 1438.8 km |
| Mean Altitude | 1453.7 km |
| Peak Altitude | 1468.7 km |
Orbital History
Drag the graphs below left or right to change the time range, or use your scroll wheel to zoom in or out.