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Spacecraft information: COSMOS 1263
Launch Details
| Launched | 8 April 1981 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 12388 |
| COSPAR ID | 1981-033A |
| Observing |
Current orbital elements
| Inclination | 82.859° |
| Eccentricity | 0.05821 |
| RA ascending node | 0.583 hr |
| Argument perigee | 303.852° |
| Mean anomaly | 50.855° |
| Orbital period | 100.821 min |
| Epoch of osculation | 12 Dec 2025, 07:31 |
Derived Quantities
| Min Altitude | 387.0 km |
| Mean Altitude | 804.7 km |
| Peak Altitude | 1222.3 km |
Launched alongside
SL-8 R/BOrbital History
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