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COSMOS 2123 & RS-12/13
Launch Details
| Launched | 4 February 1991 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 21089 |
| COSPAR ID | 1991-007A |
| Observing |
Current orbital elements
| Inclination | 82.922° |
| Eccentricity | 0.00300 |
| RA ascending node | 8.225 hr |
| Argument perigee | 133.576° |
| Mean anomaly | 292.238° |
| Orbital period | 104.737 min |
| Epoch of osculation | 02 Dec 2025, 12:08 |