Spacecraft information: COSMOS 1851
| 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 | 70.871° |
| Eccentricity | 0.45583 |
| RA ascending node | 12.904 hr |
| Argument perigee | 43.904° |
| Mean anomaly | 85.942° |
| Orbital period | 718.718 min |
| Epoch of osculation | 30 Dec 2025, 02:58 |
Derived Quantities
| Min Altitude | 8092.2 km |
| Mean Altitude | 20207.6 km |
| Peak Altitude | 32323.0 km |
Orbital History
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