Orbital elements of COSMOS 2129
| Launched | 11 February 1991 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 21104 |
| 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 09 18:56 | 2025 Dec 07 07:21:15 | 74.0301 | 0.00257 | 6.4063 | 299.9118 | 75.2379 | 12.53740 | 9.243 |
| 2025 Dec 08 18:56 | 2025 Dec 07 07:21:15 | 74.0301 | 0.00257 | 6.4063 | 299.9118 | 75.2379 | 12.53740 | 9.243 |
| 2025 Dec 07 18:56 | 2025 Dec 07 07:21:15 | 74.0301 | 0.00257 | 6.4063 | 299.9118 | 75.2379 | 12.53740 | 9.243 |
| 2025 Dec 06 18:56 | 2025 Dec 02 10:50:57 | 74.0292 | 0.00256 | 6.8393 | 307.1198 | 75.2379 | 12.53740 | 9.243 |
| 2025 Dec 05 18:57 | 2025 Dec 02 10:50:57 | 74.0292 | 0.00256 | 6.8393 | 307.1198 | 75.2379 | 12.53740 | 9.243 |
| 2025 Dec 04 18:57 | 2025 Dec 02 10:50:57 | 74.0292 | 0.00256 | 6.8393 | 307.1198 | 75.2379 | 12.53740 | 9.243 |
| 2025 Dec 03 18:56 | 2025 Dec 02 10:50:57 | 74.0292 | 0.00256 | 6.8393 | 307.1198 | 75.2379 | 12.53740 | 9.243 |
| 2025 Dec 02 18:56 | 2025 Dec 02 10:50:57 | 74.0292 | 0.00256 | 6.8393 | 307.1198 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 30 18:57 | 2025 Nov 25 12:14:20 | 74.0278 | 0.00254 | 7.4586 | 317.5091 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 29 18:56 | 2025 Nov 25 12:14:20 | 74.0278 | 0.00254 | 7.4586 | 317.5091 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 28 18:57 | 2025 Nov 25 12:14:20 | 74.0278 | 0.00254 | 7.4586 | 317.5091 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 27 18:57 | 2025 Nov 25 12:14:20 | 74.0278 | 0.00254 | 7.4586 | 317.5091 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 26 18:57 | 2025 Nov 25 12:14:20 | 74.0278 | 0.00254 | 7.4586 | 317.5091 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 25 18:57 | 2025 Nov 25 12:14:20 | 74.0278 | 0.00254 | 7.4586 | 317.5091 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 24 18:56 | 2025 Nov 19 20:42:55 | 74.0272 | 0.00254 | 7.9624 | 325.9325 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 23 18:57 | 2025 Nov 19 20:42:55 | 74.0272 | 0.00254 | 7.9624 | 325.9325 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 21 18:57 | 2025 Nov 19 20:42:55 | 74.0272 | 0.00254 | 7.9624 | 325.9325 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 20 18:56 | 2025 Nov 19 20:42:55 | 74.0272 | 0.00254 | 7.9624 | 325.9325 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 18 18:57 | 2025 Nov 08 17:47:44 | 74.0267 | 0.00252 | 8.9547 | 342.5954 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 16 18:58 | 2025 Nov 08 17:47:44 | 74.0267 | 0.00252 | 8.9547 | 342.5954 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 15 18:57 | 2025 Nov 08 17:47:44 | 74.0267 | 0.00252 | 8.9547 | 342.5954 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 13 18:56 | 2025 Nov 08 17:47:44 | 74.0267 | 0.00252 | 8.9547 | 342.5954 | 75.2379 | 12.53740 | 9.243 |
| 2025 Nov 12 18:57 | 2025 Nov 08 17:47:44 | 74.0267 | 0.00252 | 8.9547 | 342.5954 | 75.2379 | 12.53740 | 9.243 |