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 May 20 17:57 | 2026 May 16 13:32:53 | 74.0557 | 0.00440 | 15.9066 | 325.7219 | 44.5465 | 12.54562 | – |
| 2026 May 19 17:58 | 2026 May 16 13:32:53 | 74.0557 | 0.00440 | 15.9066 | 325.7219 | 44.5465 | 12.54562 | – |
| 2026 May 18 17:57 | 2026 May 16 13:32:53 | 74.0557 | 0.00440 | 15.9066 | 325.7219 | 44.5465 | 12.54562 | – |
| 2026 May 17 17:57 | 2026 May 16 13:32:53 | 74.0557 | 0.00440 | 15.9066 | 325.7219 | 44.5465 | 12.54562 | – |
| 2026 May 16 17:56 | 2026 May 16 13:32:53 | 74.0557 | 0.00440 | 15.9066 | 325.7219 | 44.5465 | 12.54562 | – |
| 2026 May 15 17:57 | 2026 May 10 10:28:59 | 74.0555 | 0.00439 | 16.4532 | 334.9996 | 44.5465 | 12.54562 | – |
| 2026 May 14 17:58 | 2026 May 10 10:28:59 | 74.0555 | 0.00439 | 16.4532 | 334.9996 | 44.5465 | 12.54562 | – |
| 2026 May 13 17:58 | 2026 May 10 10:28:59 | 74.0555 | 0.00439 | 16.4532 | 334.9996 | 44.5465 | 12.54562 | – |
| 2026 May 12 17:58 | 2026 May 10 10:28:59 | 74.0555 | 0.00439 | 16.4532 | 334.9996 | 44.5465 | 12.54562 | – |
| 2026 May 11 17:56 | 2026 May 10 10:28:59 | 74.0555 | 0.00439 | 16.4532 | 334.9996 | 44.5465 | 12.54562 | – |
| 2026 May 10 17:57 | 2026 May 10 10:28:59 | 74.0555 | 0.00439 | 16.4532 | 334.9996 | 44.5465 | 12.54562 | – |
| 2026 May 09 17:57 | 2026 May 05 09:52:48 | 74.0552 | 0.00438 | 16.9015 | 342.6141 | 44.5465 | 12.54562 | – |
| 2026 May 08 17:57 | 2026 May 05 09:52:48 | 74.0552 | 0.00438 | 16.9015 | 342.6141 | 44.5465 | 12.54562 | – |
| 2026 May 07 17:58 | 2026 May 05 09:52:48 | 74.0552 | 0.00438 | 16.9015 | 342.6141 | 44.5465 | 12.54562 | – |
| 2026 May 06 17:57 | 2026 May 05 09:52:48 | 74.0552 | 0.00438 | 16.9015 | 342.6141 | 44.5465 | 12.54562 | – |
| 2026 May 05 17:57 | 2026 May 05 09:52:48 | 74.0552 | 0.00438 | 16.9015 | 342.6141 | 44.5465 | 12.54562 | – |
| 2026 May 04 17:57 | 2026 Apr 30 14:49:52 | 74.0545 | 0.00437 | 17.3292 | 349.8844 | 44.5465 | 12.54562 | – |
| 2026 May 03 17:57 | 2026 Apr 30 14:49:52 | 74.0545 | 0.00437 | 17.3292 | 349.8844 | 44.5465 | 12.54562 | – |
| 2026 May 02 17:57 | 2026 Apr 30 14:49:52 | 74.0545 | 0.00437 | 17.3292 | 349.8844 | 44.5465 | 12.54562 | – |
| 2026 May 01 17:56 | 2026 Apr 30 14:49:52 | 74.0545 | 0.00437 | 17.3292 | 349.8844 | 44.5465 | 12.54562 | – |
| 2026 Apr 30 17:56 | 2026 Apr 30 14:49:52 | 74.0545 | 0.00437 | 17.3292 | 349.8844 | 44.5465 | 12.54562 | – |
| 2026 Apr 29 17:57 | 2026 Apr 24 11:42:40 | 74.0537 | 0.00436 | 17.8761 | 359.2242 | 44.5465 | 12.54562 | – |
| 2026 Apr 28 17:56 | 2026 Apr 24 11:42:40 | 74.0537 | 0.00436 | 17.8761 | 359.2242 | 44.5465 | 12.54562 | – |
| 2026 Apr 27 17:58 | 2026 Apr 24 11:42:40 | 74.0537 | 0.00436 | 17.8761 | 359.2242 | 44.5465 | 12.54562 | – |
| 2026 Apr 26 17:58 | 2026 Apr 24 11:42:40 | 74.0537 | 0.00436 | 17.8761 | 359.2242 | 44.5465 | 12.54562 | – |
| 2026 Apr 25 17:58 | 2026 Apr 24 11:42:40 | 74.0537 | 0.00436 | 17.8761 | 359.2242 | 44.5465 | 12.54562 | – |
| 2026 Apr 24 17:59 | 2026 Apr 24 11:42:40 | 74.0537 | 0.00436 | 17.8761 | 359.2242 | 44.5465 | 12.54562 | – |
| 2026 Apr 23 17:57 | 2026 Apr 19 06:01:51 | 74.0532 | 0.00436 | 18.3434 | 7.2018 | 44.5465 | 12.54562 | – |