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COSMOS 621
Launch Details
| Launched | 18 December 1973 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 6989 |
| COSPAR ID | 1973-104E |
| Observing |
Current orbital elements
| Inclination | 74.027° |
| Eccentricity | 0.00502 |
| RA ascending node | 14.680 hr |
| Argument perigee | 20.526° |
| Mean anomaly | 92.913° |
| Orbital period | 114.771 min |
| Epoch of osculation | 28 Jun 2025, 13:23 |
Derived Quantities
| Min Altitude | 1412.9 km |
| Mean Altitude | 1452.2 km |
| Peak Altitude | 1491.4 km |
Orbital History
Drag the graphs below left or right to change the time range, or use your scroll wheel to zoom in or out.
Launched alongside
COSMOS 617 COSMOS 618 COSMOS 619 COSMOS 620 COSMOS 622 COSMOS 623 COSMOS 624 SL-8 R/B