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 Oct 24 17:57 | 2025 Oct 23 23:09:37 | 74.0284 | 0.00249 | 10.3622 | 6.3227 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 22 17:56 | 2025 Oct 18 03:39:13 | 74.0293 | 0.00248 | 10.8807 | 15.0860 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 21 17:56 | 2025 Oct 18 03:39:13 | 74.0293 | 0.00248 | 10.8807 | 15.0860 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 20 17:56 | 2025 Oct 18 03:39:13 | 74.0293 | 0.00248 | 10.8807 | 15.0860 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 19 17:56 | 2025 Oct 18 03:39:13 | 74.0293 | 0.00248 | 10.8807 | 15.0860 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 18 17:56 | 2025 Oct 18 03:39:13 | 74.0293 | 0.00248 | 10.8807 | 15.0860 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 17 17:56 | 2025 Oct 07 11:06:53 | 74.0308 | 0.00246 | 11.8342 | 31.3430 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 16 17:56 | 2025 Oct 07 11:06:53 | 74.0308 | 0.00246 | 11.8342 | 31.3430 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 15 17:56 | 2025 Oct 07 11:06:53 | 74.0308 | 0.00246 | 11.8342 | 31.3430 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 14 17:56 | 2025 Oct 07 11:06:53 | 74.0308 | 0.00246 | 11.8342 | 31.3430 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 12 17:56 | 2025 Oct 07 11:06:53 | 74.0308 | 0.00246 | 11.8342 | 31.3430 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 11 17:57 | 2025 Oct 07 11:06:53 | 74.0308 | 0.00246 | 11.8342 | 31.3430 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 09 17:56 | 2025 Oct 07 11:06:53 | 74.0308 | 0.00246 | 11.8342 | 31.3430 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 08 17:56 | 2025 Oct 07 11:06:53 | 74.0308 | 0.00246 | 11.8342 | 31.3430 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 07 17:56 | 2025 Oct 07 11:06:53 | 74.0308 | 0.00246 | 11.8342 | 31.3430 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 05 17:56 | 2025 Sep 26 04:59:48 | 74.0311 | 0.00244 | 12.8380 | 48.4937 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 04 17:57 | 2025 Sep 26 04:59:48 | 74.0311 | 0.00244 | 12.8380 | 48.4937 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 03 17:57 | 2025 Sep 26 04:59:48 | 74.0311 | 0.00244 | 12.8380 | 48.4937 | 102.5744 | 12.53739 | 9.243 |
| 2025 Oct 02 17:56 | 2025 Sep 26 04:59:48 | 74.0311 | 0.00244 | 12.8380 | 48.4937 | 102.5744 | 12.53739 | 9.243 |
| 2025 Sep 30 17:56 | 2025 Sep 26 04:59:48 | 74.0311 | 0.00244 | 12.8380 | 48.4937 | 102.5744 | 12.53739 | 9.243 |
| 2025 Sep 29 17:56 | 2025 Sep 26 04:59:48 | 74.0311 | 0.00244 | 12.8380 | 48.4937 | 102.5744 | 12.53739 | 9.243 |
| 2025 Sep 28 17:56 | 2025 Sep 26 04:59:48 | 74.0311 | 0.00244 | 12.8380 | 48.4937 | 102.5744 | 12.53739 | 9.243 |
| 2025 Sep 27 17:56 | 2025 Sep 26 04:59:48 | 74.0311 | 0.00244 | 12.8380 | 48.4937 | 102.5744 | 12.53739 | 9.243 |