Orbital elements of COSMOS 1251
| Launched | 5 March 1981 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 12321 |
| 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 31 18:57 | 2025 Dec 31 12:42:26 | 74.0311 | 0.00437 | 19.3536 | 45.3750 | 66.1063 | 12.56487 | – |
| 2025 Dec 30 18:56 | 2025 Dec 26 06:23:42 | 74.0312 | 0.00436 | 19.8255 | 53.4879 | 66.1063 | 12.56487 | – |
| 2025 Dec 29 18:56 | 2025 Dec 26 06:23:42 | 74.0312 | 0.00436 | 19.8255 | 53.4879 | 66.1063 | 12.56487 | – |
| 2025 Dec 28 18:57 | 2025 Dec 26 06:23:42 | 74.0312 | 0.00436 | 19.8255 | 53.4879 | 66.1063 | 12.56487 | – |
| 2025 Dec 27 18:57 | 2025 Dec 26 06:23:42 | 74.0312 | 0.00436 | 19.8255 | 53.4879 | 66.1063 | 12.56487 | – |
| 2025 Dec 26 18:56 | 2025 Dec 26 06:23:42 | 74.0312 | 0.00436 | 19.8255 | 53.4879 | 66.1063 | 12.56487 | – |
| 2025 Dec 25 18:57 | 2025 Dec 20 07:18:17 | 74.0309 | 0.00435 | 20.3601 | 62.6740 | 66.1063 | 12.56487 | – |
| 2025 Dec 24 18:56 | 2025 Dec 20 07:18:17 | 74.0309 | 0.00435 | 20.3601 | 62.6740 | 66.1063 | 12.56487 | – |
| 2025 Dec 23 18:56 | 2025 Dec 20 07:18:17 | 74.0309 | 0.00435 | 20.3601 | 62.6740 | 66.1063 | 12.56487 | – |
| 2025 Dec 22 18:57 | 2025 Dec 20 07:18:17 | 74.0309 | 0.00435 | 20.3601 | 62.6740 | 66.1063 | 12.56487 | – |
| 2025 Dec 21 18:57 | 2025 Dec 20 07:18:17 | 74.0309 | 0.00435 | 20.3601 | 62.6740 | 66.1063 | 12.56487 | – |
| 2025 Dec 20 18:57 | 2025 Dec 20 07:18:17 | 74.0309 | 0.00435 | 20.3601 | 62.6740 | 66.1063 | 12.56487 | – |
| 2025 Dec 19 18:57 | 2025 Dec 12 06:17:10 | 74.0303 | 0.00434 | 21.0813 | 75.1108 | 66.1063 | 12.56487 | – |
| 2025 Dec 18 18:57 | 2025 Dec 12 06:17:10 | 74.0303 | 0.00434 | 21.0813 | 75.1108 | 66.1063 | 12.56487 | – |
| 2025 Dec 17 18:58 | 2025 Dec 12 06:17:10 | 74.0303 | 0.00434 | 21.0813 | 75.1108 | 66.1063 | 12.56487 | – |
| 2025 Dec 16 18:57 | 2025 Dec 12 06:17:10 | 74.0303 | 0.00434 | 21.0813 | 75.1108 | 66.1063 | 12.56487 | – |
| 2025 Dec 15 18:58 | 2025 Dec 12 06:17:10 | 74.0303 | 0.00434 | 21.0813 | 75.1108 | 66.1063 | 12.56487 | – |
| 2025 Dec 14 18:56 | 2025 Dec 12 06:17:10 | 74.0303 | 0.00434 | 21.0813 | 75.1108 | 66.1063 | 12.56487 | – |
| 2025 Dec 13 18:56 | 2025 Dec 12 06:17:10 | 74.0303 | 0.00434 | 21.0813 | 75.1108 | 66.1063 | 12.56487 | – |
| 2025 Dec 12 18:57 | 2025 Dec 12 06:17:10 | 74.0303 | 0.00434 | 21.0813 | 75.1108 | 66.1063 | 12.56487 | – |
| 2025 Dec 11 18:56 | 2025 Dec 07 05:24:19 | 74.0300 | 0.00434 | 21.5330 | 82.9101 | 66.1063 | 12.56487 | – |
| 2025 Dec 10 18:56 | 2025 Dec 07 05:24:19 | 74.0300 | 0.00434 | 21.5330 | 82.9101 | 66.1063 | 12.56487 | – |
| 2025 Dec 09 18:56 | 2025 Dec 07 05:24:19 | 74.0300 | 0.00434 | 21.5330 | 82.9101 | 66.1063 | 12.56487 | – |
| 2025 Dec 08 18:56 | 2025 Dec 07 05:24:19 | 74.0300 | 0.00434 | 21.5330 | 82.9101 | 66.1063 | 12.56487 | – |
| 2025 Dec 07 18:56 | 2025 Dec 07 05:24:19 | 74.0300 | 0.00434 | 21.5330 | 82.9101 | 66.1063 | 12.56487 | – |
| 2025 Dec 06 18:56 | 2025 Dec 02 11:18:43 | 74.0300 | 0.00434 | 21.9593 | 90.2879 | 66.1063 | 12.56487 | – |
| 2025 Dec 05 18:57 | 2025 Dec 02 11:18:43 | 74.0300 | 0.00434 | 21.9593 | 90.2879 | 66.1063 | 12.56487 | – |
| 2025 Dec 04 18:57 | 2025 Dec 02 11:18:43 | 74.0300 | 0.00434 | 21.9593 | 90.2879 | 66.1063 | 12.56487 | – |