Spacecraft information: RADIO 5
| Launched | 16 December 1981 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 12999 |
| COSPAR ID | 1981-120C |
| Observing |
Current orbital elements
| Inclination | 82.960° |
| Eccentricity | 0.00140 |
| RA ascending node | 12.171 hr |
| Argument perigee | 323.849° |
| Mean anomaly | 49.296° |
| Orbital period | 119.471 min |
| Epoch of osculation | 20 Dec 2025, 12:03 |
Derived Quantities
| Min Altitude | 1653.1 km |
| Mean Altitude | 1664.3 km |
| Peak Altitude | 1675.5 km |
Orbital History
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