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Spacecraft information: RADUGA 21
Launch Details
| Launched | 9 December 1987 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 18631 |
| COSPAR ID | 1987-100A |
| Observing |
Current orbital elements
| Inclination | 11.209° |
| Eccentricity | 0.00015 |
| RA ascending node | 21.653 hr |
| Argument perigee | 287.146° |
| Mean anomaly | 74.628° |
| Orbital period | 1435.166 min |
| Epoch of osculation | 25 Aug 2026, 04:12 |
Derived Quantities
| Min Altitude | 35769.3 km |
| Mean Altitude | 35775.5 km |
| Peak Altitude | 35781.7 km |
Orbital History
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