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Spacecraft information: COSMOS 1904
Launch Details
| Launched | 22 December 1987 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 18709 |
| COSPAR ID | 1987-106A |
| Observing |
Current orbital elements
| Inclination | 82.916° |
| Eccentricity | 0.00264 |
| RA ascending node | 9.604 hr |
| Argument perigee | 319.639° |
| Mean anomaly | 64.709° |
| Orbital period | 104.768 min |
| Epoch of osculation | 10 Mar 2026, 05:19 |
Derived Quantities
| Min Altitude | 971.3 km |
| Mean Altitude | 990.7 km |
| Peak Altitude | 1010.2 km |
Launched alongside
SL-8 R/BOrbital History
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