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Spacecraft information: 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 | 74.029° |
| Eccentricity | 0.00506 |
| RA ascending node | 14.475 hr |
| Argument perigee | 330.068° |
| Mean anomaly | 91.411° |
| Orbital period | 114.771 min |
| Epoch of osculation | 26 Mar 2026, 09:14 |
Derived Quantities
| Min Altitude | 1412.6 km |
| Mean Altitude | 1452.1 km |
| Peak Altitude | 1491.7 km |
Launched alongside
COSMOS 617 COSMOS 618 COSMOS 619 COSMOS 620 COSMOS 622 COSMOS 623 COSMOS 624 SL-8 R/BOrbital History
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