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 Dec 21 18:57 | 2025 Dec 20 07:16:02 | 74.0564 | 0.00438 | 5.0444 | 191.0556 | 227.1886 | 12.54560 | – |
| 2025 Dec 20 18:57 | 2025 Dec 20 07:16:02 | 74.0564 | 0.00438 | 5.0444 | 191.0556 | 227.1886 | 12.54560 | – |
| 2025 Dec 19 18:57 | 2025 Dec 12 05:48:35 | 74.0562 | 0.00439 | 5.7635 | 203.1904 | 227.1886 | 12.54560 | – |
| 2025 Dec 18 18:57 | 2025 Dec 12 05:48:35 | 74.0562 | 0.00439 | 5.7635 | 203.1904 | 227.1886 | 12.54560 | – |
| 2025 Dec 17 18:58 | 2025 Dec 12 05:48:35 | 74.0562 | 0.00439 | 5.7635 | 203.1904 | 227.1886 | 12.54560 | – |
| 2025 Dec 16 18:57 | 2025 Dec 12 05:48:35 | 74.0562 | 0.00439 | 5.7635 | 203.1904 | 227.1886 | 12.54560 | – |
| 2025 Dec 15 18:58 | 2025 Dec 12 05:48:35 | 74.0562 | 0.00439 | 5.7635 | 203.1904 | 227.1886 | 12.54560 | – |
| 2025 Dec 14 18:56 | 2025 Dec 12 05:48:35 | 74.0562 | 0.00439 | 5.7635 | 203.1904 | 227.1886 | 12.54560 | – |
| 2025 Dec 13 18:56 | 2025 Dec 12 05:48:35 | 74.0562 | 0.00439 | 5.7635 | 203.1904 | 227.1886 | 12.54560 | – |
| 2025 Dec 12 18:57 | 2025 Dec 12 05:48:35 | 74.0562 | 0.00439 | 5.7635 | 203.1904 | 227.1886 | 12.54560 | – |
| 2025 Dec 11 18:56 | 2025 Dec 07 07:10:48 | 74.0556 | 0.00440 | 6.2044 | 210.6097 | 227.1886 | 12.54560 | – |
| 2025 Dec 10 18:56 | 2025 Dec 07 07:10:48 | 74.0556 | 0.00440 | 6.2044 | 210.6097 | 227.1886 | 12.54560 | – |
| 2025 Dec 09 18:56 | 2025 Dec 07 07:10:48 | 74.0556 | 0.00440 | 6.2044 | 210.6097 | 227.1886 | 12.54560 | – |
| 2025 Dec 08 18:56 | 2025 Dec 07 07:10:48 | 74.0556 | 0.00440 | 6.2044 | 210.6097 | 227.1886 | 12.54560 | – |
| 2025 Dec 07 18:56 | 2025 Dec 07 07:10:48 | 74.0556 | 0.00440 | 6.2044 | 210.6097 | 227.1886 | 12.54560 | – |
| 2025 Dec 06 18:56 | 2025 Dec 02 12:36:08 | 74.0550 | 0.00440 | 6.6303 | 217.7529 | 227.1886 | 12.54560 | – |
| 2025 Dec 05 18:57 | 2025 Dec 02 12:36:08 | 74.0550 | 0.00440 | 6.6303 | 217.7529 | 227.1886 | 12.54560 | – |
| 2025 Dec 04 18:57 | 2025 Dec 02 12:36:08 | 74.0550 | 0.00440 | 6.6303 | 217.7529 | 227.1886 | 12.54560 | – |
| 2025 Dec 03 18:56 | 2025 Dec 02 12:36:08 | 74.0550 | 0.00440 | 6.6303 | 217.7529 | 227.1886 | 12.54560 | – |
| 2025 Dec 02 18:56 | 2025 Dec 02 12:36:08 | 74.0550 | 0.00440 | 6.6303 | 217.7529 | 227.1886 | 12.54560 | – |
| 2025 Nov 30 18:57 | 2025 Nov 25 12:09:00 | 74.0537 | 0.00441 | 7.2564 | 228.2237 | 227.1886 | 12.54560 | – |
| 2025 Nov 29 18:56 | 2025 Nov 25 12:09:00 | 74.0537 | 0.00441 | 7.2564 | 228.2237 | 227.1886 | 12.54560 | – |
| 2025 Nov 28 18:57 | 2025 Nov 25 12:09:00 | 74.0537 | 0.00441 | 7.2564 | 228.2237 | 227.1886 | 12.54560 | – |
| 2025 Nov 27 18:57 | 2025 Nov 25 12:09:00 | 74.0537 | 0.00441 | 7.2564 | 228.2237 | 227.1886 | 12.54560 | – |
| 2025 Nov 26 18:57 | 2025 Nov 25 12:09:00 | 74.0537 | 0.00441 | 7.2564 | 228.2237 | 227.1886 | 12.54560 | – |
| 2025 Nov 25 18:57 | 2025 Nov 25 12:09:00 | 74.0537 | 0.00441 | 7.2564 | 228.2237 | 227.1886 | 12.54560 | – |
| 2025 Nov 24 18:56 | 2025 Nov 20 04:30:56 | 74.0531 | 0.00441 | 7.7309 | 236.2159 | 227.1886 | 12.54560 | – |