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Spacecraft information: COSMOS 1261 DEB
Launch Details
| Launched | 30 March 1981 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 35507 |
| COSPAR ID | 1981-031N |
| Observing |
Current orbital elements
| Inclination | 61.889° |
| Eccentricity | 0.74091 |
| RA ascending node | 20.312 hr |
| Argument perigee | 43.109° |
| Mean anomaly | 355.403° |
| Orbital period | 713.143 min |
| Epoch of osculation | 03 May 2026, 15:01 |
Derived Quantities
| Min Altitude | 479.7 km |
| Mean Altitude | 20070.0 km |
| Peak Altitude | 39660.3 km |
Orbital History
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