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Spacecraft information: COSMOS 990
Launch Details
| Launched | 16 February 1978 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 10676 |
| COSPAR ID | 1978-019A |
| Observing |
Current orbital elements
| Inclination | 74.038° |
| Eccentricity | 0.00165 |
| RA ascending node | 2.414 hr |
| Argument perigee | 350.215° |
| Mean anomaly | 9.868° |
| Orbital period | 100.191 min |
| Epoch of osculation | 18 Aug 2026, 14:50 |
Derived Quantities
| Min Altitude | 762.9 km |
| Mean Altitude | 774.7 km |
| Peak Altitude | 786.5 km |
Orbital History
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