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 |
| 2025 May 09 17:57 | 2025 May 09 03:34:30 | 74.0587 | 0.00438 | 1.1302 | 172.4713 | 341.6053 | 12.54555 | – |
| 2025 May 08 17:56 | 2025 May 03 04:02:28 | 74.0590 | 0.00439 | 1.6637 | 181.5959 | 341.6053 | 12.54555 | – |
| 2025 May 07 17:56 | 2025 May 03 04:02:28 | 74.0590 | 0.00439 | 1.6637 | 181.5959 | 341.6053 | 12.54555 | – |
| 2025 May 06 17:57 | 2025 May 03 04:02:28 | 74.0590 | 0.00439 | 1.6637 | 181.5959 | 341.6053 | 12.54555 | – |
| 2025 May 05 17:56 | 2025 May 03 04:02:28 | 74.0590 | 0.00439 | 1.6637 | 181.5959 | 341.6053 | 12.54555 | – |
| 2025 May 04 17:57 | 2025 May 03 04:02:28 | 74.0590 | 0.00439 | 1.6637 | 181.5959 | 341.6053 | 12.54555 | – |
| 2025 May 03 17:57 | 2025 May 03 04:02:28 | 74.0590 | 0.00439 | 1.6637 | 181.5959 | 341.6053 | 12.54555 | – |
| 2025 May 01 17:56 | 2025 Apr 22 05:39:11 | 74.0583 | 0.00441 | 2.6389 | 198.2404 | 341.6053 | 12.54555 | – |
| 2025 Apr 30 17:56 | 2025 Apr 22 05:39:11 | 74.0583 | 0.00441 | 2.6389 | 198.2404 | 341.6053 | 12.54555 | – |
| 2025 Apr 29 17:57 | 2025 Apr 22 05:39:11 | 74.0583 | 0.00441 | 2.6389 | 198.2404 | 341.6053 | 12.54555 | – |
| 2025 Apr 27 17:56 | 2025 Apr 22 05:39:11 | 74.0583 | 0.00441 | 2.6389 | 198.2404 | 341.6053 | 12.54555 | – |
| 2025 Apr 26 17:57 | 2025 Apr 22 05:39:11 | 74.0583 | 0.00441 | 2.6389 | 198.2404 | 341.6053 | 12.54555 | – |
| 2025 Apr 25 17:56 | 2025 Apr 22 05:39:11 | 74.0583 | 0.00441 | 2.6389 | 198.2404 | 341.6053 | 12.54555 | – |
| 2025 Apr 24 17:56 | 2025 Apr 22 05:39:11 | 74.0583 | 0.00441 | 2.6389 | 198.2404 | 341.6053 | 12.54555 | – |
| 2025 Apr 23 17:57 | 2025 Apr 22 05:39:11 | 74.0583 | 0.00441 | 2.6389 | 198.2404 | 341.6053 | 12.54555 | – |
| 2025 Apr 22 17:56 | 2025 Apr 22 05:39:11 | 74.0583 | 0.00441 | 2.6389 | 198.2404 | 341.6053 | 12.54555 | – |
| 2025 Apr 21 17:57 | 2025 Apr 15 22:15:48 | 74.0573 | 0.00442 | 3.2015 | 207.7778 | 341.6053 | 12.54555 | – |
| 2025 Apr 20 17:56 | 2025 Apr 15 22:15:48 | 74.0573 | 0.00442 | 3.2015 | 207.7778 | 341.6053 | 12.54555 | – |
| 2025 Apr 19 17:56 | 2025 Apr 15 22:15:48 | 74.0573 | 0.00442 | 3.2015 | 207.7778 | 341.6053 | 12.54555 | – |
| 2025 Apr 18 17:57 | 2025 Apr 15 22:15:48 | 74.0573 | 0.00442 | 3.2015 | 207.7778 | 341.6053 | 12.54555 | – |
| 2025 Apr 17 17:56 | 2025 Apr 15 22:15:48 | 74.0573 | 0.00442 | 3.2015 | 207.7778 | 341.6053 | 12.54555 | – |
| 2025 Apr 16 17:57 | 2025 Apr 15 22:15:48 | 74.0573 | 0.00442 | 3.2015 | 207.7778 | 341.6053 | 12.54555 | – |
| 2025 Apr 15 17:56 | 2025 Apr 11 03:06:50 | 74.0563 | 0.00443 | 3.6295 | 215.0498 | 341.6053 | 12.54555 | – |
| 2025 Apr 14 17:56 | 2025 Apr 11 03:06:50 | 74.0563 | 0.00443 | 3.6295 | 215.0498 | 341.6053 | 12.54555 | – |