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COSMOS 81
Launch Details
| 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 | 56.062° |
| Eccentricity | 0.00872 |
| RA ascending node | 22.984 hr |
| Argument perigee | 195.937° |
| Mean anomaly | 187.598° |
| Orbital period | 115.305 min |
| Epoch of osculation | 12 Dec 2025, 06:41 |