Orbital elements of COSMOS 681
| Launched | 18 September 1974 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 7439 |
| 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 Jun 13 17:56 | 2026 Jun 12 01:44:26 | 74.0366 | 0.00040 | 1.4802 | 39.2669 | 78.0303 | 12.49073 | – |
| 2026 Jun 12 17:56 | 2026 Jun 12 01:44:26 | 74.0366 | 0.00040 | 1.4802 | 39.2669 | 78.0303 | 12.49073 | – |
| 2026 Jun 11 17:57 | 2026 Jun 07 00:37:15 | 74.0370 | 0.00039 | 1.9264 | 47.5357 | 78.0303 | 12.49073 | – |
| 2026 Jun 10 17:56 | 2026 Jun 07 00:37:15 | 74.0370 | 0.00039 | 1.9264 | 47.5357 | 78.0303 | 12.49073 | – |
| 2026 Jun 09 17:57 | 2026 Jun 07 00:37:15 | 74.0370 | 0.00039 | 1.9264 | 47.5357 | 78.0303 | 12.49073 | – |
| 2026 Jun 08 17:56 | 2026 Jun 07 00:37:15 | 74.0370 | 0.00039 | 1.9264 | 47.5357 | 78.0303 | 12.49073 | – |
| 2026 Jun 07 17:56 | 2026 Jun 07 00:37:15 | 74.0370 | 0.00039 | 1.9264 | 47.5357 | 78.0303 | 12.49073 | – |
| 2026 Jun 06 17:56 | 2026 May 31 03:32:53 | 74.0374 | 0.00038 | 2.5344 | 58.3753 | 78.0303 | 12.49073 | – |
| 2026 Jun 05 17:56 | 2026 May 31 03:32:53 | 74.0374 | 0.00038 | 2.5344 | 58.3753 | 78.0303 | 12.49073 | – |
| 2026 Jun 04 17:57 | 2026 May 31 03:32:53 | 74.0374 | 0.00038 | 2.5344 | 58.3753 | 78.0303 | 12.49073 | – |
| 2026 Jun 02 17:56 | 2026 May 31 03:32:53 | 74.0374 | 0.00038 | 2.5344 | 58.3753 | 78.0303 | 12.49073 | – |
| 2026 Jun 01 17:57 | 2026 May 31 03:32:53 | 74.0374 | 0.00038 | 2.5344 | 58.3753 | 78.0303 | 12.49073 | – |
| 2026 May 31 17:58 | 2026 May 31 03:32:53 | 74.0374 | 0.00038 | 2.5344 | 58.3753 | 78.0303 | 12.49073 | – |
| 2026 May 30 17:57 | 2026 May 26 04:22:54 | 74.0375 | 0.00038 | 2.9734 | 66.4716 | 78.0303 | 12.49073 | – |
| 2026 May 29 17:57 | 2026 May 26 04:22:54 | 74.0375 | 0.00038 | 2.9734 | 66.4716 | 78.0303 | 12.49073 | – |
| 2026 May 28 17:56 | 2026 May 26 04:22:54 | 74.0375 | 0.00038 | 2.9734 | 66.4716 | 78.0303 | 12.49073 | – |
| 2026 May 27 17:57 | 2026 May 26 04:22:54 | 74.0375 | 0.00038 | 2.9734 | 66.4716 | 78.0303 | 12.49073 | – |
| 2026 May 26 17:57 | 2026 May 26 04:22:54 | 74.0375 | 0.00038 | 2.9734 | 66.4716 | 78.0303 | 12.49073 | – |
| 2026 May 25 17:57 | 2026 May 21 05:00:28 | 74.0372 | 0.00037 | 3.4131 | 75.1190 | 78.0303 | 12.49073 | – |
| 2026 May 24 17:57 | 2026 May 21 05:00:28 | 74.0372 | 0.00037 | 3.4131 | 75.1190 | 78.0303 | 12.49073 | – |
| 2026 May 23 17:58 | 2026 May 21 05:00:28 | 74.0372 | 0.00037 | 3.4131 | 75.1190 | 78.0303 | 12.49073 | – |
| 2026 May 22 17:57 | 2026 May 21 05:00:28 | 74.0372 | 0.00037 | 3.4131 | 75.1190 | 78.0303 | 12.49073 | – |
| 2026 May 21 17:57 | 2026 May 21 05:00:28 | 74.0372 | 0.00037 | 3.4131 | 75.1190 | 78.0303 | 12.49073 | – |
| 2026 May 20 17:57 | 2026 May 16 13:50:34 | 74.0368 | 0.00037 | 3.8225 | 83.0568 | 78.0303 | 12.49073 | – |
| 2026 May 19 17:58 | 2026 May 16 13:50:34 | 74.0368 | 0.00037 | 3.8225 | 83.0568 | 78.0303 | 12.49073 | – |
| 2026 May 18 17:57 | 2026 May 16 13:50:34 | 74.0368 | 0.00037 | 3.8225 | 83.0568 | 78.0303 | 12.49073 | – |
| 2026 May 17 17:57 | 2026 May 16 13:50:34 | 74.0368 | 0.00037 | 3.8225 | 83.0568 | 78.0303 | 12.49073 | – |