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 |
| 2026 Jul 03 17:57 | 2026 Jun 29 10:13:10 | 74.0272 | 0.00251 | 12.1962 | 349.9677 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jul 02 17:56 | 2026 Jun 29 10:13:10 | 74.0272 | 0.00251 | 12.1962 | 349.9677 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jul 01 17:56 | 2026 Jun 29 10:13:10 | 74.0272 | 0.00251 | 12.1962 | 349.9677 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 30 17:56 | 2026 Jun 29 10:13:10 | 74.0272 | 0.00251 | 12.1962 | 349.9677 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 29 17:57 | 2026 Jun 29 10:13:10 | 74.0272 | 0.00251 | 12.1962 | 349.9677 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 28 17:56 | 2026 Jun 22 19:15:51 | 74.0272 | 0.00250 | 12.7870 | 359.9747 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 27 17:55 | 2026 Jun 22 19:15:51 | 74.0272 | 0.00250 | 12.7870 | 359.9747 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 26 17:56 | 2026 Jun 22 19:15:51 | 74.0272 | 0.00250 | 12.7870 | 359.9747 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 25 17:56 | 2026 Jun 22 19:15:51 | 74.0272 | 0.00250 | 12.7870 | 359.9747 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 24 17:55 | 2026 Jun 22 19:15:51 | 74.0272 | 0.00250 | 12.7870 | 359.9747 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 23 17:56 | 2026 Jun 22 19:15:51 | 74.0272 | 0.00250 | 12.7870 | 359.9747 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 22 17:56 | 2026 Jun 17 12:41:03 | 74.0276 | 0.00249 | 13.2575 | 7.9837 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 21 17:57 | 2026 Jun 17 12:41:03 | 74.0276 | 0.00249 | 13.2575 | 7.9837 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 20 17:56 | 2026 Jun 17 12:41:03 | 74.0276 | 0.00249 | 13.2575 | 7.9837 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 19 17:57 | 2026 Jun 17 12:41:03 | 74.0276 | 0.00249 | 13.2575 | 7.9837 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 18 17:56 | 2026 Jun 17 12:41:03 | 74.0276 | 0.00249 | 13.2575 | 7.9837 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 17 17:57 | 2026 Jun 17 12:41:03 | 74.0276 | 0.00249 | 13.2575 | 7.9837 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 16 17:55 | 2026 Jun 12 06:17:25 | 74.0280 | 0.00248 | 13.7274 | 16.0585 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 15 17:56 | 2026 Jun 12 06:17:25 | 74.0280 | 0.00248 | 13.7274 | 16.0585 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 14 17:57 | 2026 Jun 12 06:17:25 | 74.0280 | 0.00248 | 13.7274 | 16.0585 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 13 17:56 | 2026 Jun 12 06:17:25 | 74.0280 | 0.00248 | 13.7274 | 16.0585 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 12 17:56 | 2026 Jun 12 06:17:25 | 74.0280 | 0.00248 | 13.7274 | 16.0585 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 11 17:57 | 2026 Jun 06 14:33:21 | 74.0288 | 0.00247 | 14.2319 | 24.7221 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 10 17:56 | 2026 Jun 06 14:33:21 | 74.0288 | 0.00247 | 14.2319 | 24.7221 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 09 17:57 | 2026 Jun 06 14:33:21 | 74.0288 | 0.00247 | 14.2319 | 24.7221 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 08 17:56 | 2026 Jun 06 14:33:21 | 74.0288 | 0.00247 | 14.2319 | 24.7221 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 07 17:56 | 2026 Jun 06 14:33:21 | 74.0288 | 0.00247 | 14.2319 | 24.7221 | 123.5267 | 12.53744 | 9.243 |
| 2026 Jun 06 17:56 | 2026 May 31 08:58:31 | 74.0295 | 0.00247 | 14.7878 | 34.3423 | 123.5267 | 12.53744 | 9.243 |