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Spacecraft information: COSMOS 1639
Launch Details
| Launched | 20 March 1985 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 15621 |
| COSPAR ID | 1985-023E |
| Observing |
Current orbital elements
| Inclination | 74.056° |
| Eccentricity | 0.00259 |
| RA ascending node | 9.779 hr |
| Argument perigee | 279.014° |
| Mean anomaly | 151.178° |
| Orbital period | 115.103 min |
| Epoch of osculation | 02 Feb 2026, 09:42 |
Derived Quantities
| Min Altitude | 1447.0 km |
| Mean Altitude | 1467.2 km |
| Peak Altitude | 1487.5 km |
Launched alongside
COSMOS 1635 COSMOS 1636 COSMOS 1637 COSMOS 1638 COSMOS 1640 COSMOS 1641 COSMOS 1642 SL-8 R/BOrbital History
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