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 Mar 12 18:57 | 2026 Mar 10 12:45:48 | 74.0357 | 0.00044 | 9.7502 | 192.7786 | 284.1480 | 12.49071 | – |
| 2026 Mar 11 18:56 | 2026 Mar 10 12:45:48 | 74.0357 | 0.00044 | 9.7502 | 192.7786 | 284.1480 | 12.49071 | – |
| 2026 Mar 10 18:56 | 2026 Mar 10 12:45:48 | 74.0357 | 0.00044 | 9.7502 | 192.7786 | 284.1480 | 12.49071 | – |
| 2026 Mar 09 18:56 | 2026 Mar 04 08:30:07 | 74.0363 | 0.00045 | 10.2963 | 201.3232 | 284.1480 | 12.49071 | – |
| 2026 Mar 08 18:57 | 2026 Mar 04 08:30:07 | 74.0363 | 0.00045 | 10.2963 | 201.3232 | 284.1480 | 12.49071 | – |
| 2026 Mar 07 18:57 | 2026 Mar 04 08:30:07 | 74.0363 | 0.00045 | 10.2963 | 201.3232 | 284.1480 | 12.49071 | – |
| 2026 Mar 06 18:56 | 2026 Mar 04 08:30:07 | 74.0363 | 0.00045 | 10.2963 | 201.3232 | 284.1480 | 12.49071 | – |
| 2026 Mar 05 18:56 | 2026 Mar 04 08:30:07 | 74.0363 | 0.00045 | 10.2963 | 201.3232 | 284.1480 | 12.49071 | – |
| 2026 Mar 04 18:57 | 2026 Mar 04 08:30:07 | 74.0363 | 0.00045 | 10.2963 | 201.3232 | 284.1480 | 12.49071 | – |
| 2026 Mar 03 18:56 | 2026 Feb 26 13:49:00 | 74.0367 | 0.00045 | 10.8071 | 208.2935 | 284.1480 | 12.49071 | – |
| 2026 Mar 02 18:57 | 2026 Feb 26 13:49:00 | 74.0367 | 0.00045 | 10.8071 | 208.2935 | 284.1480 | 12.49071 | – |
| 2026 Mar 01 18:57 | 2026 Feb 26 13:49:00 | 74.0367 | 0.00045 | 10.8071 | 208.2935 | 284.1480 | 12.49071 | – |
| 2026 Feb 28 18:56 | 2026 Feb 26 13:49:00 | 74.0367 | 0.00045 | 10.8071 | 208.2935 | 284.1480 | 12.49071 | – |
| 2026 Feb 27 19:05 | 2026 Feb 26 13:49:00 | 74.0367 | 0.00045 | 10.8071 | 208.2935 | 284.1480 | 12.49071 | – |
| 2026 Feb 26 20:45 | 2026 Feb 26 13:49:00 | 74.0367 | 0.00045 | 10.8071 | 208.2935 | 284.1480 | 12.49071 | – |