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Spacecraft information: COSMOS 858
Launch Details
| Launched | 28 September 1976 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 9443 |
| COSPAR ID | 1976-098A |
| Observing |
Current orbital elements
| Inclination | 74.051° |
| Eccentricity | 0.00129 |
| RA ascending node | 21.969 hr |
| Argument perigee | 114.100° |
| Mean anomaly | 246.150° |
| Orbital period | 100.341 min |
| Epoch of osculation | 15 Mar 2026, 15:15 |
Derived Quantities
| Min Altitude | 772.7 km |
| Mean Altitude | 781.9 km |
| Peak Altitude | 791.1 km |
Orbital History
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