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COSMOS 1851
Launch Details
| Launched | 11 June 1987 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 18103 |
| COSPAR ID | 1987-050A |
| Observing |
Current orbital elements
| Inclination | 70.864° |
| Eccentricity | 0.44963 |
| RA ascending node | 13.156 hr |
| Argument perigee | 47.040° |
| Mean anomaly | 91.656° |
| Orbital period | 718.396 min |
| Epoch of osculation | 11 Sep 2025, 08:25 |
Derived Quantities
| Min Altitude | 8252.8 km |
| Mean Altitude | 20199.7 km |
| Peak Altitude | 32146.6 km |
Orbital History
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