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Spacecraft information: COSMOS 2135
Launch Details
| Launched | 25 February 1991 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 21130 |
| COSPAR ID | 1991-013A |
| Observing |
Current orbital elements
| Inclination | 82.825° |
| Eccentricity | 0.00670 |
| RA ascending node | 19.174 hr |
| Argument perigee | 104.048° |
| Mean anomaly | 256.814° |
| Orbital period | 104.439 min |
| Epoch of osculation | 15 Mar 2026, 13:04 |
Derived Quantities
| Min Altitude | 926.1 km |
| Mean Altitude | 975.3 km |
| Peak Altitude | 1024.5 km |
Launched alongside
SL-8 R/BOrbital History
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