Orbital elements of COSMOS 621
| Launched | 18 December 1973 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 6989 |
| Date fetched |
Epoch osculation |
Inc. [°] |
Ecc. | RA asc node [hr] |
Arg Peri. [°] |
Mean anom [°] |
Mean motion [rev/day] |
Abs. mag |
| Date fetched |
Epoch osculation |
Inc. [°] |
Ecc. | RA asc node [hr] |
Arg Peri. [°] |
Mean anom [°] |
Mean motion [rev/day] |
Abs. mag |
| 2025 Dec 05 18:57 | 2025 Dec 02 11:05:50 | 74.0310 | 0.00497 | 0.6570 | 144.2491 | 321.2304 | 12.54673 | – |
| 2025 Dec 04 18:57 | 2025 Dec 02 11:05:50 | 74.0310 | 0.00497 | 0.6570 | 144.2491 | 321.2304 | 12.54673 | – |
| 2025 Dec 03 18:56 | 2025 Dec 02 11:05:50 | 74.0310 | 0.00497 | 0.6570 | 144.2491 | 321.2304 | 12.54673 | – |
| 2025 Dec 02 18:56 | 2025 Dec 02 11:05:50 | 74.0310 | 0.00497 | 0.6570 | 144.2491 | 321.2304 | 12.54673 | – |
| 2025 Nov 30 18:57 | 2025 Nov 25 10:12:37 | 74.0316 | 0.00498 | 1.2859 | 154.9630 | 321.2304 | 12.54673 | – |
| 2025 Nov 29 18:56 | 2025 Nov 25 10:12:37 | 74.0316 | 0.00498 | 1.2859 | 154.9630 | 321.2304 | 12.54673 | – |
| 2025 Nov 28 18:57 | 2025 Nov 25 10:12:37 | 74.0316 | 0.00498 | 1.2859 | 154.9630 | 321.2304 | 12.54673 | – |
| 2025 Nov 27 18:57 | 2025 Nov 25 10:12:37 | 74.0316 | 0.00498 | 1.2859 | 154.9630 | 321.2304 | 12.54673 | – |
| 2025 Nov 26 18:57 | 2025 Nov 25 10:12:37 | 74.0316 | 0.00498 | 1.2859 | 154.9630 | 321.2304 | 12.54673 | – |
| 2025 Nov 25 18:57 | 2025 Nov 25 10:12:37 | 74.0316 | 0.00498 | 1.2859 | 154.9630 | 321.2304 | 12.54673 | – |
| 2025 Nov 24 18:56 | 2025 Nov 20 06:04:51 | 74.0320 | 0.00499 | 1.7481 | 162.8236 | 321.2304 | 12.54673 | – |
| 2025 Nov 23 18:57 | 2025 Nov 20 06:04:51 | 74.0320 | 0.00499 | 1.7481 | 162.8236 | 321.2304 | 12.54673 | – |
| 2025 Nov 21 18:57 | 2025 Nov 20 06:04:51 | 74.0320 | 0.00499 | 1.7481 | 162.8236 | 321.2304 | 12.54673 | – |
| 2025 Nov 20 18:56 | 2025 Nov 20 06:04:51 | 74.0320 | 0.00499 | 1.7481 | 162.8236 | 321.2304 | 12.54673 | – |
| 2025 Nov 18 18:57 | 2025 Nov 08 17:08:08 | 74.0320 | 0.00502 | 2.7793 | 180.2978 | 321.2304 | 12.54673 | – |
| 2025 Nov 16 18:58 | 2025 Nov 08 17:08:08 | 74.0320 | 0.00502 | 2.7793 | 180.2978 | 321.2304 | 12.54673 | – |
| 2025 Nov 15 18:57 | 2025 Nov 08 17:08:08 | 74.0320 | 0.00502 | 2.7793 | 180.2978 | 321.2304 | 12.54673 | – |
| 2025 Nov 13 18:56 | 2025 Nov 08 17:08:08 | 74.0320 | 0.00502 | 2.7793 | 180.2978 | 321.2304 | 12.54673 | – |
| 2025 Nov 12 18:57 | 2025 Nov 08 17:08:08 | 74.0320 | 0.00502 | 2.7793 | 180.2978 | 321.2304 | 12.54673 | – |
| 2025 Nov 11 18:55 | 2025 Nov 08 17:08:08 | 74.0320 | 0.00502 | 2.7793 | 180.2978 | 321.2304 | 12.54673 | – |
| 2025 Nov 10 18:57 | 2025 Nov 08 17:08:08 | 74.0320 | 0.00502 | 2.7793 | 180.2978 | 321.2304 | 12.54673 | – |
| 2025 Nov 09 18:57 | 2025 Nov 08 17:08:08 | 74.0320 | 0.00502 | 2.7793 | 180.2978 | 321.2304 | 12.54673 | – |
| 2025 Nov 08 18:56 | 2025 Nov 02 11:27:40 | 74.0313 | 0.00503 | 3.3366 | 189.6653 | 321.2304 | 12.54673 | – |