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 |
| 2025 Sep 12 17:57 | 2025 Sep 03 04:21:20 | 74.0364 | 0.00037 | 2.4015 | 104.5793 | 69.6383 | 12.49067 | – |
| 2025 Sep 11 17:57 | 2025 Sep 03 04:21:20 | 74.0364 | 0.00037 | 2.4015 | 104.5793 | 69.6383 | 12.49067 | – |
| 2025 Sep 10 17:56 | 2025 Sep 03 04:21:20 | 74.0364 | 0.00037 | 2.4015 | 104.5793 | 69.6383 | 12.49067 | – |
| 2025 Sep 08 17:57 | 2025 Sep 03 04:21:20 | 74.0364 | 0.00037 | 2.4015 | 104.5793 | 69.6383 | 12.49067 | – |
| 2025 Sep 07 17:56 | 2025 Sep 03 04:21:20 | 74.0364 | 0.00037 | 2.4015 | 104.5793 | 69.6383 | 12.49067 | – |
| 2025 Sep 06 20:41 | 2025 Sep 03 04:21:20 | 74.0364 | 0.00037 | 2.4015 | 104.5793 | 69.6383 | 12.49067 | – |
| 2025 Sep 03 17:57 | 2025 Sep 03 04:21:20 | 74.0364 | 0.00037 | 2.4015 | 104.5793 | 69.6383 | 12.49067 | – |
| 2025 Sep 02 17:56 | 2025 Aug 27 22:06:16 | 74.0350 | 0.00038 | 2.9550 | 115.1214 | 69.6383 | 12.49067 | – |
| 2025 Sep 01 17:56 | 2025 Aug 27 22:06:16 | 74.0350 | 0.00038 | 2.9550 | 115.1214 | 69.6383 | 12.49067 | – |
| 2025 Aug 31 17:56 | 2025 Aug 27 22:06:16 | 74.0350 | 0.00038 | 2.9550 | 115.1214 | 69.6383 | 12.49067 | – |
| 2025 Aug 30 17:56 | 2025 Aug 27 22:06:16 | 74.0350 | 0.00038 | 2.9550 | 115.1214 | 69.6383 | 12.49067 | – |
| 2025 Aug 29 17:56 | 2025 Aug 27 22:06:16 | 74.0350 | 0.00038 | 2.9550 | 115.1214 | 69.6383 | 12.49067 | – |
| 2025 Aug 28 17:57 | 2025 Aug 27 22:06:16 | 74.0350 | 0.00038 | 2.9550 | 115.1214 | 69.6383 | 12.49067 | – |
| 2025 Aug 27 17:56 | 2025 Aug 23 05:01:55 | 74.0343 | 0.00039 | 3.3716 | 123.1194 | 69.6383 | 12.49067 | – |
| 2025 Aug 26 17:56 | 2025 Aug 23 05:01:55 | 74.0343 | 0.00039 | 3.3716 | 123.1194 | 69.6383 | 12.49067 | – |
| 2025 Aug 25 17:56 | 2025 Aug 23 05:01:55 | 74.0343 | 0.00039 | 3.3716 | 123.1194 | 69.6383 | 12.49067 | – |
| 2025 Aug 24 17:56 | 2025 Aug 23 05:01:55 | 74.0343 | 0.00039 | 3.3716 | 123.1194 | 69.6383 | 12.49067 | – |
| 2025 Aug 23 17:56 | 2025 Aug 23 05:01:55 | 74.0343 | 0.00039 | 3.3716 | 123.1194 | 69.6383 | 12.49067 | – |
| 2025 Aug 22 17:56 | 2025 Aug 17 21:49:07 | 74.0336 | 0.00039 | 3.8403 | 131.6900 | 69.6383 | 12.49067 | – |
| 2025 Aug 20 17:56 | 2025 Aug 17 21:49:07 | 74.0336 | 0.00039 | 3.8403 | 131.6900 | 69.6383 | 12.49067 | – |
| 2025 Aug 19 17:56 | 2025 Aug 17 21:49:07 | 74.0336 | 0.00039 | 3.8403 | 131.6900 | 69.6383 | 12.49067 | – |
| 2025 Aug 18 17:56 | 2025 Aug 17 21:49:07 | 74.0336 | 0.00039 | 3.8403 | 131.6900 | 69.6383 | 12.49067 | – |