Orbital elements of COSMOS 1691
| Launched | 8 October 1985 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 16139 |
| 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 25 18:57 | 2025 Dec 20 10:39:07 | 82.6122 | 0.00010 | 2.8998 | 120.4100 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 24 18:56 | 2025 Dec 20 10:39:07 | 82.6122 | 0.00010 | 2.8998 | 120.4100 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 23 18:56 | 2025 Dec 20 10:39:07 | 82.6122 | 0.00010 | 2.8998 | 120.4100 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 22 18:57 | 2025 Dec 20 10:39:07 | 82.6122 | 0.00010 | 2.8998 | 120.4100 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 21 18:57 | 2025 Dec 20 10:39:07 | 82.6122 | 0.00010 | 2.8998 | 120.4100 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 20 18:57 | 2025 Dec 20 10:39:07 | 82.6122 | 0.00010 | 2.8998 | 120.4100 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 19 18:57 | 2025 Dec 12 05:07:41 | 82.6130 | 0.00009 | 3.2485 | 121.0414 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 18 18:57 | 2025 Dec 12 05:07:41 | 82.6130 | 0.00009 | 3.2485 | 121.0414 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 17 18:58 | 2025 Dec 12 05:07:41 | 82.6130 | 0.00009 | 3.2485 | 121.0414 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 16 18:57 | 2025 Dec 12 05:07:41 | 82.6130 | 0.00009 | 3.2485 | 121.0414 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 15 18:58 | 2025 Dec 12 05:07:41 | 82.6130 | 0.00009 | 3.2485 | 121.0414 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 14 18:56 | 2025 Dec 12 05:07:41 | 82.6130 | 0.00009 | 3.2485 | 121.0414 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 13 18:56 | 2025 Dec 12 05:07:41 | 82.6130 | 0.00009 | 3.2485 | 121.0414 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 12 18:57 | 2025 Dec 12 05:07:41 | 82.6130 | 0.00009 | 3.2485 | 121.0414 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 11 18:56 | 2025 Dec 07 03:10:33 | 82.6134 | 0.00008 | 3.4637 | 120.6921 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 10 18:56 | 2025 Dec 07 03:10:33 | 82.6134 | 0.00008 | 3.4637 | 120.6921 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 09 18:56 | 2025 Dec 07 03:10:33 | 82.6134 | 0.00008 | 3.4637 | 120.6921 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 08 18:56 | 2025 Dec 07 03:10:33 | 82.6134 | 0.00008 | 3.4637 | 120.6921 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 07 18:56 | 2025 Dec 07 03:10:33 | 82.6134 | 0.00008 | 3.4637 | 120.6921 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 06 18:56 | 2025 Dec 02 07:21:59 | 82.6135 | 0.00007 | 3.6681 | 117.9845 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 05 18:57 | 2025 Dec 02 07:21:59 | 82.6135 | 0.00007 | 3.6681 | 117.9845 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 04 18:57 | 2025 Dec 02 07:21:59 | 82.6135 | 0.00007 | 3.6681 | 117.9845 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 03 18:56 | 2025 Dec 02 07:21:59 | 82.6135 | 0.00007 | 3.6681 | 117.9845 | 250.7188 | 12.62470 | 8.743 |
| 2025 Dec 02 18:56 | 2025 Dec 02 07:21:59 | 82.6135 | 0.00007 | 3.6681 | 117.9845 | 250.7188 | 12.62470 | 8.743 |
| 2025 Nov 30 18:57 | 2025 Nov 25 07:59:17 | 82.6134 | 0.00008 | 3.9635 | 111.8924 | 250.7188 | 12.62470 | 8.743 |
| 2025 Nov 29 18:56 | 2025 Nov 25 07:59:17 | 82.6134 | 0.00008 | 3.9635 | 111.8924 | 250.7188 | 12.62470 | 8.743 |
| 2025 Nov 28 18:57 | 2025 Nov 25 07:59:17 | 82.6134 | 0.00008 | 3.9635 | 111.8924 | 250.7188 | 12.62470 | 8.743 |