Spacecraft information: COSMOS 81
| Launched | 2 September 1965 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 1571 |
| COSPAR ID | 1965-070B |
| Observing |
Current orbital elements
| Inclination | 56.059° |
| Eccentricity | 0.00863 |
| RA ascending node | 7.142 hr |
| Argument perigee | 316.822° |
| Mean anomaly | 197.279° |
| Orbital period | 115.304 min |
| Epoch of osculation | 10 Mar 2026, 12:30 |
Derived Quantities
| Min Altitude | 1408.6 km |
| Mean Altitude | 1476.4 km |
| Peak Altitude | 1544.1 km |
Orbital History
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