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 Jun 23 17:56 | 2026 Jun 22 14:51:21 | 82.6124 | 0.00014 | 19.0973 | 119.1951 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 22 17:56 | 2026 Jun 17 09:36:13 | 82.6121 | 0.00013 | 19.3184 | 120.9799 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 21 17:57 | 2026 Jun 17 09:36:13 | 82.6121 | 0.00013 | 19.3184 | 120.9799 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 20 17:56 | 2026 Jun 17 09:36:13 | 82.6121 | 0.00013 | 19.3184 | 120.9799 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 19 17:57 | 2026 Jun 17 09:36:13 | 82.6121 | 0.00013 | 19.3184 | 120.9799 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 18 17:56 | 2026 Jun 17 09:36:13 | 82.6121 | 0.00013 | 19.3184 | 120.9799 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 17 17:57 | 2026 Jun 17 09:36:13 | 82.6121 | 0.00013 | 19.3184 | 120.9799 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 16 17:55 | 2026 Jun 12 02:44:57 | 82.6118 | 0.00012 | 19.5423 | 123.1107 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 15 17:56 | 2026 Jun 12 02:44:57 | 82.6118 | 0.00012 | 19.5423 | 123.1107 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 14 17:57 | 2026 Jun 12 02:44:57 | 82.6118 | 0.00012 | 19.5423 | 123.1107 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 13 17:56 | 2026 Jun 12 02:44:57 | 82.6118 | 0.00012 | 19.5423 | 123.1107 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 12 17:56 | 2026 Jun 12 02:44:57 | 82.6118 | 0.00012 | 19.5423 | 123.1107 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 11 17:57 | 2026 Jun 07 02:55:26 | 82.6115 | 0.00011 | 19.7539 | 123.3158 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 10 17:56 | 2026 Jun 07 02:55:26 | 82.6115 | 0.00011 | 19.7539 | 123.3158 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 09 17:57 | 2026 Jun 07 02:55:26 | 82.6115 | 0.00011 | 19.7539 | 123.3158 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 08 17:56 | 2026 Jun 07 02:55:26 | 82.6115 | 0.00011 | 19.7539 | 123.3158 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 07 17:56 | 2026 Jun 07 02:55:26 | 82.6115 | 0.00011 | 19.7539 | 123.3158 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 06 17:56 | 2026 May 31 12:31:22 | 82.6108 | 0.00010 | 20.0335 | 122.5927 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 05 17:56 | 2026 May 31 12:31:22 | 82.6108 | 0.00010 | 20.0335 | 122.5927 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 04 17:57 | 2026 May 31 12:31:22 | 82.6108 | 0.00010 | 20.0335 | 122.5927 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 02 17:56 | 2026 May 31 12:31:22 | 82.6108 | 0.00010 | 20.0335 | 122.5927 | 252.6862 | 12.62476 | 8.743 |
| 2026 Jun 01 17:57 | 2026 May 31 12:31:22 | 82.6108 | 0.00010 | 20.0335 | 122.5927 | 252.6862 | 12.62476 | 8.743 |
| 2026 May 31 17:58 | 2026 May 31 12:31:22 | 82.6108 | 0.00010 | 20.0335 | 122.5927 | 252.6862 | 12.62476 | 8.743 |
| 2026 May 30 17:57 | 2026 May 26 05:38:03 | 82.6103 | 0.00009 | 20.2576 | 120.3368 | 252.6862 | 12.62476 | 8.743 |
| 2026 May 29 17:57 | 2026 May 26 05:38:03 | 82.6103 | 0.00009 | 20.2576 | 120.3368 | 252.6862 | 12.62476 | 8.743 |
| 2026 May 28 17:56 | 2026 May 26 05:38:03 | 82.6103 | 0.00009 | 20.2576 | 120.3368 | 252.6862 | 12.62476 | 8.743 |
| 2026 May 27 17:57 | 2026 May 26 05:38:03 | 82.6103 | 0.00009 | 20.2576 | 120.3368 | 252.6862 | 12.62476 | 8.743 |