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 Nov 03 18:57 | 2025 Nov 02 10:19:30 | 82.6108 | 0.00008 | 4.9336 | 86.8371 | 336.5757 | 12.62468 | 8.743 |
| 2025 Nov 02 18:57 | 2025 Oct 29 11:13:28 | 82.6099 | 0.00008 | 5.1015 | 82.8766 | 336.5757 | 12.62468 | 8.743 |
| 2025 Nov 01 18:58 | 2025 Oct 29 11:13:28 | 82.6099 | 0.00008 | 5.1015 | 82.8766 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 31 18:57 | 2025 Oct 29 11:13:28 | 82.6099 | 0.00008 | 5.1015 | 82.8766 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 30 18:57 | 2025 Oct 29 11:13:28 | 82.6099 | 0.00008 | 5.1015 | 82.8766 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 29 18:57 | 2025 Oct 29 11:13:28 | 82.6099 | 0.00008 | 5.1015 | 82.8766 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 28 18:57 | 2025 Oct 23 22:22:17 | 82.6089 | 0.00008 | 5.3360 | 79.4979 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 27 18:57 | 2025 Oct 23 22:22:17 | 82.6089 | 0.00008 | 5.3360 | 79.4979 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 26 18:57 | 2025 Oct 23 22:22:17 | 82.6089 | 0.00008 | 5.3360 | 79.4979 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 25 17:57 | 2025 Oct 23 22:22:17 | 82.6089 | 0.00008 | 5.3360 | 79.4979 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 24 17:57 | 2025 Oct 23 22:22:17 | 82.6089 | 0.00008 | 5.3360 | 79.4979 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 22 17:56 | 2025 Oct 18 03:49:28 | 82.6079 | 0.00009 | 5.5806 | 77.6762 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 21 17:56 | 2025 Oct 18 03:49:28 | 82.6079 | 0.00009 | 5.5806 | 77.6762 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 20 17:56 | 2025 Oct 18 03:49:28 | 82.6079 | 0.00009 | 5.5806 | 77.6762 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 19 17:56 | 2025 Oct 18 03:49:28 | 82.6079 | 0.00009 | 5.5806 | 77.6762 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 18 17:56 | 2025 Oct 18 03:49:28 | 82.6079 | 0.00009 | 5.5806 | 77.6762 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 17 17:56 | 2025 Oct 07 12:19:41 | 82.6067 | 0.00011 | 6.0319 | 76.8047 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 16 17:56 | 2025 Oct 07 12:19:41 | 82.6067 | 0.00011 | 6.0319 | 76.8047 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 15 17:56 | 2025 Oct 07 12:19:41 | 82.6067 | 0.00011 | 6.0319 | 76.8047 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 14 17:56 | 2025 Oct 07 12:19:41 | 82.6067 | 0.00011 | 6.0319 | 76.8047 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 12 17:56 | 2025 Oct 07 12:19:41 | 82.6067 | 0.00011 | 6.0319 | 76.8047 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 11 17:57 | 2025 Oct 07 12:19:41 | 82.6067 | 0.00011 | 6.0319 | 76.8047 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 09 17:56 | 2025 Oct 07 12:19:41 | 82.6067 | 0.00011 | 6.0319 | 76.8047 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 08 17:56 | 2025 Oct 07 12:19:41 | 82.6067 | 0.00011 | 6.0319 | 76.8047 | 336.5757 | 12.62468 | 8.743 |
| 2025 Oct 07 17:56 | 2025 Oct 07 12:19:41 | 82.6067 | 0.00011 | 6.0319 | 76.8047 | 336.5757 | 12.62468 | 8.743 |