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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 | 0.05733 |
| RA ascending node | 9.526 hr |
| Argument perigee | 184.694° |
| Mean anomaly | 174.875° |
| Orbital period | 100.648 min |
| Epoch of osculation | 11 Sep 2026, 15:08 |
Derived Quantities
| Min Altitude | 385.5 km |
| Mean Altitude | 796.4 km |
| Peak Altitude | 1207.3 km |
Launched alongside
SL-8 R/BOrbital History
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