Orbital elements of COSMOS 1641
| Launched | 20 March 1985 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 15623 |
| 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 19 17:57 | 2026 Jun 17 13:31:35 | 74.0532 | 0.00444 | 13.0521 | 277.5635 | 205.6704 | 12.54563 | – |
| 2026 Jun 18 17:56 | 2026 Jun 17 13:31:35 | 74.0532 | 0.00444 | 13.0521 | 277.5635 | 205.6704 | 12.54563 | – |
| 2026 Jun 17 17:57 | 2026 Jun 17 13:31:35 | 74.0532 | 0.00444 | 13.0521 | 277.5635 | 205.6704 | 12.54563 | – |
| 2026 Jun 16 17:55 | 2026 Jun 12 05:01:23 | 74.0536 | 0.00443 | 13.5298 | 285.6129 | 205.6704 | 12.54563 | – |
| 2026 Jun 15 17:56 | 2026 Jun 12 05:01:23 | 74.0536 | 0.00443 | 13.5298 | 285.6129 | 205.6704 | 12.54563 | – |
| 2026 Jun 14 17:57 | 2026 Jun 12 05:01:23 | 74.0536 | 0.00443 | 13.5298 | 285.6129 | 205.6704 | 12.54563 | – |
| 2026 Jun 13 17:56 | 2026 Jun 12 05:01:23 | 74.0536 | 0.00443 | 13.5298 | 285.6129 | 205.6704 | 12.54563 | – |
| 2026 Jun 12 17:56 | 2026 Jun 12 05:01:23 | 74.0536 | 0.00443 | 13.5298 | 285.6129 | 205.6704 | 12.54563 | – |
| 2026 Jun 11 17:57 | 2026 Jun 06 15:20:04 | 74.0543 | 0.00443 | 14.0267 | 293.9863 | 205.6704 | 12.54563 | – |
| 2026 Jun 10 17:56 | 2026 Jun 06 15:20:04 | 74.0543 | 0.00443 | 14.0267 | 293.9863 | 205.6704 | 12.54563 | – |
| 2026 Jun 09 17:57 | 2026 Jun 06 15:20:04 | 74.0543 | 0.00443 | 14.0267 | 293.9863 | 205.6704 | 12.54563 | – |
| 2026 Jun 08 17:56 | 2026 Jun 06 15:20:04 | 74.0543 | 0.00443 | 14.0267 | 293.9863 | 205.6704 | 12.54563 | – |
| 2026 Jun 07 17:56 | 2026 Jun 06 15:20:04 | 74.0543 | 0.00443 | 14.0267 | 293.9863 | 205.6704 | 12.54563 | – |
| 2026 Jun 06 17:56 | 2026 May 31 13:37:28 | 74.0550 | 0.00442 | 14.5683 | 303.0944 | 205.6704 | 12.54563 | – |
| 2026 Jun 05 17:56 | 2026 May 31 13:37:28 | 74.0550 | 0.00442 | 14.5683 | 303.0944 | 205.6704 | 12.54563 | – |
| 2026 Jun 04 17:57 | 2026 May 31 13:37:28 | 74.0550 | 0.00442 | 14.5683 | 303.0944 | 205.6704 | 12.54563 | – |
| 2026 Jun 02 17:56 | 2026 May 31 13:37:28 | 74.0550 | 0.00442 | 14.5683 | 303.0944 | 205.6704 | 12.54563 | – |
| 2026 Jun 01 17:57 | 2026 May 31 13:37:28 | 74.0550 | 0.00442 | 14.5683 | 303.0944 | 205.6704 | 12.54563 | – |
| 2026 May 31 17:58 | 2026 May 31 13:37:28 | 74.0550 | 0.00442 | 14.5683 | 303.0944 | 205.6704 | 12.54563 | – |
| 2026 May 30 17:57 | 2026 May 26 07:16:13 | 74.0554 | 0.00441 | 15.0379 | 311.0242 | 205.6704 | 12.54563 | – |
| 2026 May 29 17:57 | 2026 May 26 07:16:13 | 74.0554 | 0.00441 | 15.0379 | 311.0242 | 205.6704 | 12.54563 | – |
| 2026 May 28 17:56 | 2026 May 26 07:16:13 | 74.0554 | 0.00441 | 15.0379 | 311.0242 | 205.6704 | 12.54563 | – |
| 2026 May 27 17:57 | 2026 May 26 07:16:13 | 74.0554 | 0.00441 | 15.0379 | 311.0242 | 205.6704 | 12.54563 | – |
| 2026 May 26 17:57 | 2026 May 26 07:16:13 | 74.0554 | 0.00441 | 15.0379 | 311.0242 | 205.6704 | 12.54563 | – |
| 2026 May 25 17:57 | 2026 May 21 14:24:10 | 74.0559 | 0.00441 | 15.4574 | 318.1112 | 205.6704 | 12.54563 | – |
| 2026 May 24 17:57 | 2026 May 21 14:24:10 | 74.0559 | 0.00441 | 15.4574 | 318.1112 | 205.6704 | 12.54563 | – |
| 2026 May 23 17:58 | 2026 May 21 14:24:10 | 74.0559 | 0.00441 | 15.4574 | 318.1112 | 205.6704 | 12.54563 | – |