Spacecraft information: COSMOS 2143
| Launched | 15 May 1991 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 21299 |
| COSPAR ID | 1991-033A |
| Observing |
Current orbital elements
| Inclination | 82.575° |
| Eccentricity | 0.00137 |
| RA ascending node | 20.172 hr |
| Argument perigee | 56.203° |
| Mean anomaly | 9.619° |
| Orbital period | 113.930 min |
| Epoch of osculation | 17 Jun 2026, 11:00 |
Derived Quantities
| Min Altitude | 1403.3 km |
| Mean Altitude | 1413.9 km |
| Peak Altitude | 1424.5 km |
Orbital History
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