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COSMOS 400
Launch Details
| Launched | 17 March 1971 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 5050 |
| COSPAR ID | 1971-020A |
| Observing |
Current orbital elements
| Inclination | 65.826° |
| Eccentricity | 0.00155 |
| RA ascending node | 22.006 hr |
| Argument perigee | 285.938° |
| Mean anomaly | 147.944° |
| Orbital period | 104.941 min |
| Epoch of osculation | 03 Jul 2025, 12:57 |