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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 | 82.564° |
| Eccentricity | 0.00031 |
| RA ascending node | 10.523 hr |
| Argument perigee | 83.032° |
| Mean anomaly | 91.729° |
| Orbital period | 113.955 min |
| Epoch of osculation | 08 Jul 2025, 16:59 |
Derived Quantities
| Min Altitude | 1412.6 km |
| Mean Altitude | 1415.0 km |
| Peak Altitude | 1417.5 km |
Orbital History
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