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Spacecraft information: COSMOS 1857
Launch Details
| Launched | 15 June 1987 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 18118 |
| COSPAR ID | 1987-051F |
| Observing |
Current orbital elements
| Inclination | 74.005° |
| Eccentricity | 0.00375 |
| RA ascending node | 1.135 hr |
| Argument perigee | 59.265° |
| Mean anomaly | 301.209° |
| Orbital period | 114.808 min |
| Epoch of osculation | 31 Dec 2025, 10:31 |
Derived Quantities
| Min Altitude | 1424.4 km |
| Mean Altitude | 1453.8 km |
| Peak Altitude | 1483.2 km |
Launched alongside
COSMOS 1852 COSMOS 1853 COSMOS 1854 COSMOS 1855 COSMOS 1856 COSMOS 1858 COSMOS 1859 SL-8 R/BOrbital History
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