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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 | 74.039° |
| Eccentricity | 0.00155 |
| RA ascending node | 7.977 hr |
| Argument perigee | 138.962° |
| Mean anomaly | 221.271° |
| Orbital period | 100.197 min |
| Epoch of osculation | 20 Dec 2025, 12:01 |
Derived Quantities
| Min Altitude | 763.9 km |
| Mean Altitude | 775.0 km |
| Peak Altitude | 786.1 km |
Orbital History
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