Spacecraft information: COSMOS 877
| Launched | 6 December 1976 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 9594 |
| COSPAR ID | 1976-118G |
| Observing |
Current orbital elements
| Inclination | 74.031° |
| Eccentricity | 0.00060 |
| RA ascending node | 2.771 hr |
| Argument perigee | 353.026° |
| Mean anomaly | 127.888° |
| Orbital period | 115.077 min |
| Epoch of osculation | 10 Mar 2026, 09:57 |
Derived Quantities
| Min Altitude | 1461.3 km |
| Mean Altitude | 1466.0 km |
| Peak Altitude | 1470.8 km |
Launched alongside
COSMOS 871 COSMOS 872 COSMOS 873 COSMOS 874 COSMOS 875 COSMOS 876 COSMOS 878 SL-8 R/BOrbital History
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