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Spacecraft information: INFORMATOR 1 & RS-14
Launch Details
| Launched | 28 January 1991 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 21087 |
| COSPAR ID | 1991-006A |
| Alternative names |
AMSAT-OSCAR 21 AO-21 |
| Observing |
Current orbital elements
| Inclination | 82.941° |
| Eccentricity | 0.00340 |
| RA ascending node | 9.666 hr |
| Argument perigee | 312.396° |
| Mean anomaly | 201.358° |
| Orbital period | 104.688 min |
| Epoch of osculation | 21 May 2026, 10:35 |
Derived Quantities
| Min Altitude | 961.9 km |
| Mean Altitude | 987.0 km |
| Peak Altitude | 1012.0 km |
Orbital History
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