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COSMOS 539
Launch Details
| Launched | 20 December 1972 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 6319 |
| COSPAR ID | 1972-102A |
| Observing |
Current orbital elements
| Inclination | 74.016° |
| Eccentricity | 0.00233 |
| RA ascending node | 11.101 hr |
| Argument perigee | 123.671° |
| Mean anomaly | 298.945° |
| Orbital period | 112.905 min |
| Epoch of osculation | 15 Jul 2024, 22:05 |
Derived Quantities
| Min Altitude | 1349.1 km |
| Mean Altitude | 1367.1 km |
| Peak Altitude | 1385.1 km |
Orbital History
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