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Spacecraft information: COSMOS 1640
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 | 15622 |
| COSPAR ID | 1985-023F |
| Observing |
Current orbital elements
| Inclination | 74.058° |
| Eccentricity | 0.00334 |
| RA ascending node | 22.627 hr |
| Argument perigee | 81.220° |
| Mean anomaly | 91.667° |
| Orbital period | 114.939 min |
| Epoch of osculation | 19 Apr 2026, 09:12 |
Derived Quantities
| Min Altitude | 1433.6 km |
| Mean Altitude | 1459.8 km |
| Peak Altitude | 1485.9 km |
Launched alongside
COSMOS 1635 COSMOS 1636 COSMOS 1637 COSMOS 1638 COSMOS 1639 COSMOS 1641 COSMOS 1642 SL-8 R/BOrbital History
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