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Spacecraft information: COSMOS 1821
Launch Details
| Launched | 17 February 1987 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 17525 |
| COSPAR ID | 1987-017A |
| Observing |
Current orbital elements
| Inclination | 82.914° |
| Eccentricity | 0.00378 |
| RA ascending node | 19.209 hr |
| Argument perigee | 39.596° |
| Mean anomaly | 80.379° |
| Orbital period | 104.809 min |
| Epoch of osculation | 06 Jan 2026, 07:45 |
Derived Quantities
| Min Altitude | 964.8 km |
| Mean Altitude | 992.6 km |
| Peak Altitude | 1020.4 km |
Launched alongside
SL-8 R/BOrbital History
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