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Spacecraft information: COSMOS 1877
Launch Details
| Launched | 6 September 1987 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 18336 |
| COSPAR ID | 1987-074C |
| Observing |
Current orbital elements
| Inclination | 82.563° |
| Eccentricity | 0.00008 |
| RA ascending node | 18.393 hr |
| Argument perigee | 356.750° |
| Mean anomaly | 31.803° |
| Orbital period | 113.954 min |
| Epoch of osculation | 21 Jul 2026, 04:20 |
Derived Quantities
| Min Altitude | 1414.4 km |
| Mean Altitude | 1415.0 km |
| Peak Altitude | 1415.6 km |
Orbital History
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