Orbital elements of COSMOS 1257
| Launched | 5 March 1981 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 12327 |
| 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 Mar 31 17:57 | 2026 Mar 26 09:29:09 | 74.0304 | 0.00063 | 11.2606 | 57.5885 | 12.9347 | 12.47856 | – |
| 2026 Mar 30 17:58 | 2026 Mar 26 09:29:09 | 74.0304 | 0.00063 | 11.2606 | 57.5885 | 12.9347 | 12.47856 | – |
| 2026 Mar 29 17:57 | 2026 Mar 26 09:29:09 | 74.0304 | 0.00063 | 11.2606 | 57.5885 | 12.9347 | 12.47856 | – |
| 2026 Mar 28 18:57 | 2026 Mar 26 09:29:09 | 74.0304 | 0.00063 | 11.2606 | 57.5885 | 12.9347 | 12.47856 | – |
| 2026 Mar 27 18:57 | 2026 Mar 26 09:29:09 | 74.0304 | 0.00063 | 11.2606 | 57.5885 | 12.9347 | 12.47856 | – |
| 2026 Mar 26 18:57 | 2026 Mar 26 09:29:09 | 74.0304 | 0.00063 | 11.2606 | 57.5885 | 12.9347 | 12.47856 | – |
| 2026 Mar 25 18:56 | 2026 Mar 20 12:43:18 | 74.0306 | 0.00063 | 11.7780 | 67.3166 | 12.9347 | 12.47856 | – |
| 2026 Mar 24 18:56 | 2026 Mar 20 12:43:18 | 74.0306 | 0.00063 | 11.7780 | 67.3166 | 12.9347 | 12.47856 | – |
| 2026 Mar 23 18:56 | 2026 Mar 20 12:43:18 | 74.0306 | 0.00063 | 11.7780 | 67.3166 | 12.9347 | 12.47856 | – |
| 2026 Mar 22 18:56 | 2026 Mar 20 12:43:18 | 74.0306 | 0.00063 | 11.7780 | 67.3166 | 12.9347 | 12.47856 | – |
| 2026 Mar 21 19:05 | 2026 Mar 20 12:43:18 | 74.0306 | 0.00063 | 11.7780 | 67.3166 | 12.9347 | 12.47856 | – |
| 2026 Mar 20 18:57 | 2026 Mar 20 12:43:18 | 74.0306 | 0.00063 | 11.7780 | 67.3166 | 12.9347 | 12.47856 | – |
| 2026 Mar 19 18:56 | 2026 Mar 15 11:51:45 | 74.0306 | 0.00063 | 12.2222 | 75.6872 | 12.9347 | 12.47856 | – |
| 2026 Mar 18 18:56 | 2026 Mar 15 11:51:45 | 74.0306 | 0.00063 | 12.2222 | 75.6872 | 12.9347 | 12.47856 | – |
| 2026 Mar 17 18:56 | 2026 Mar 15 11:51:45 | 74.0306 | 0.00063 | 12.2222 | 75.6872 | 12.9347 | 12.47856 | – |
| 2026 Mar 16 18:57 | 2026 Mar 15 11:51:45 | 74.0306 | 0.00063 | 12.2222 | 75.6872 | 12.9347 | 12.47856 | – |
| 2026 Mar 15 18:56 | 2026 Mar 15 11:51:45 | 74.0306 | 0.00063 | 12.2222 | 75.6872 | 12.9347 | 12.47856 | – |
| 2026 Mar 14 18:56 | 2026 Mar 10 12:35:18 | 74.0303 | 0.00063 | 12.6607 | 83.9696 | 12.9347 | 12.47856 | – |
| 2026 Mar 13 18:57 | 2026 Mar 10 12:35:18 | 74.0303 | 0.00063 | 12.6607 | 83.9696 | 12.9347 | 12.47856 | – |
| 2026 Mar 12 18:57 | 2026 Mar 10 12:35:18 | 74.0303 | 0.00063 | 12.6607 | 83.9696 | 12.9347 | 12.47856 | – |
| 2026 Mar 11 18:56 | 2026 Mar 10 12:35:18 | 74.0303 | 0.00063 | 12.6607 | 83.9696 | 12.9347 | 12.47856 | – |
| 2026 Mar 10 18:56 | 2026 Mar 10 12:35:18 | 74.0303 | 0.00063 | 12.6607 | 83.9696 | 12.9347 | 12.47856 | – |
| 2026 Mar 09 18:56 | 2026 Mar 04 12:14:04 | 74.0292 | 0.00063 | 13.1914 | 93.9365 | 12.9347 | 12.47856 | – |
| 2026 Mar 08 18:57 | 2026 Mar 04 12:14:04 | 74.0292 | 0.00063 | 13.1914 | 93.9365 | 12.9347 | 12.47856 | – |
| 2026 Mar 07 18:57 | 2026 Mar 04 12:14:04 | 74.0292 | 0.00063 | 13.1914 | 93.9365 | 12.9347 | 12.47856 | – |
| 2026 Mar 06 18:56 | 2026 Mar 04 12:14:04 | 74.0292 | 0.00063 | 13.1914 | 93.9365 | 12.9347 | 12.47856 | – |
| 2026 Mar 05 18:56 | 2026 Mar 04 12:14:04 | 74.0292 | 0.00063 | 13.1914 | 93.9365 | 12.9347 | 12.47856 | – |
| 2026 Mar 04 18:57 | 2026 Mar 04 12:14:04 | 74.0292 | 0.00063 | 13.1914 | 93.9365 | 12.9347 | 12.47856 | – |