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 |
| 2026 Mar 13 18:57 | 2026 Mar 10 06:31:25 | 82.6180 | 0.00014 | 23.5180 | 65.7119 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 12 18:57 | 2026 Mar 10 06:31:25 | 82.6180 | 0.00014 | 23.5180 | 65.7119 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 11 18:56 | 2026 Mar 10 06:31:25 | 82.6180 | 0.00014 | 23.5180 | 65.7119 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 10 18:56 | 2026 Mar 10 06:31:25 | 82.6180 | 0.00014 | 23.5180 | 65.7119 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 09 18:56 | 2026 Mar 04 07:51:53 | 82.6176 | 0.00015 | 23.7696 | 70.0977 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 08 18:57 | 2026 Mar 04 07:51:53 | 82.6176 | 0.00015 | 23.7696 | 70.0977 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 07 18:57 | 2026 Mar 04 07:51:53 | 82.6176 | 0.00015 | 23.7696 | 70.0977 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 06 18:56 | 2026 Mar 04 07:51:53 | 82.6176 | 0.00015 | 23.7696 | 70.0977 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 05 18:56 | 2026 Mar 04 07:51:53 | 82.6176 | 0.00015 | 23.7696 | 70.0977 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 04 18:57 | 2026 Mar 04 07:51:53 | 82.6176 | 0.00015 | 23.7696 | 70.0977 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 03 18:56 | 2026 Feb 26 09:15:18 | 82.6170 | 0.00015 | 0.0212 | 73.9366 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 02 18:57 | 2026 Feb 26 09:15:18 | 82.6170 | 0.00015 | 0.0212 | 73.9366 | 54.4141 | 12.62473 | 8.743 |
| 2026 Mar 01 18:57 | 2026 Feb 26 09:15:18 | 82.6170 | 0.00015 | 0.0212 | 73.9366 | 54.4141 | 12.62473 | 8.743 |
| 2026 Feb 28 18:56 | 2026 Feb 26 09:15:18 | 82.6170 | 0.00015 | 0.0212 | 73.9366 | 54.4141 | 12.62473 | 8.743 |
| 2026 Feb 27 19:05 | 2026 Feb 26 09:15:18 | 82.6170 | 0.00015 | 0.0212 | 73.9366 | 54.4141 | 12.62473 | 8.743 |
| 2026 Feb 26 20:45 | 2026 Feb 26 09:15:18 | 82.6170 | 0.00015 | 0.0212 | 73.9366 | 54.4141 | 12.62473 | 8.743 |