Orbital elements of COSMOS 1640
| Launched | 20 March 1985 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 15622 |
| 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 06:51:25 | 74.0551 | 0.00345 | 5.3142 | 243.7335 | 268.5106 | 12.52833 | – |
| 2025 May 08 17:56 | 2025 May 03 08:52:31 | 74.0540 | 0.00346 | 5.8403 | 252.5567 | 268.5106 | 12.52833 | – |
| 2025 May 07 17:56 | 2025 May 03 08:52:31 | 74.0540 | 0.00346 | 5.8403 | 252.5567 | 268.5106 | 12.52833 | – |
| 2025 May 06 17:57 | 2025 May 03 08:52:31 | 74.0540 | 0.00346 | 5.8403 | 252.5567 | 268.5106 | 12.52833 | – |
| 2025 May 05 17:56 | 2025 May 03 08:52:31 | 74.0540 | 0.00346 | 5.8403 | 252.5567 | 268.5106 | 12.52833 | – |
| 2025 May 04 17:57 | 2025 May 03 08:52:31 | 74.0540 | 0.00346 | 5.8403 | 252.5567 | 268.5106 | 12.52833 | – |
| 2025 May 03 17:57 | 2025 May 03 08:52:31 | 74.0540 | 0.00346 | 5.8403 | 252.5567 | 268.5106 | 12.52833 | – |
| 2025 May 01 17:56 | 2025 Apr 22 10:19:26 | 74.0521 | 0.00346 | 6.8132 | 268.8435 | 268.5106 | 12.52833 | – |
| 2025 Apr 30 17:56 | 2025 Apr 22 10:19:26 | 74.0521 | 0.00346 | 6.8132 | 268.8435 | 268.5106 | 12.52833 | – |
| 2025 Apr 29 17:57 | 2025 Apr 22 10:19:26 | 74.0521 | 0.00346 | 6.8132 | 268.8435 | 268.5106 | 12.52833 | – |
| 2025 Apr 27 17:56 | 2025 Apr 22 10:19:26 | 74.0521 | 0.00346 | 6.8132 | 268.8435 | 268.5106 | 12.52833 | – |
| 2025 Apr 26 17:57 | 2025 Apr 22 10:19:26 | 74.0521 | 0.00346 | 6.8132 | 268.8435 | 268.5106 | 12.52833 | – |
| 2025 Apr 25 17:56 | 2025 Apr 22 10:19:26 | 74.0521 | 0.00346 | 6.8132 | 268.8435 | 268.5106 | 12.52833 | – |
| 2025 Apr 24 17:56 | 2025 Apr 22 10:19:26 | 74.0521 | 0.00346 | 6.8132 | 268.8435 | 268.5106 | 12.52833 | – |
| 2025 Apr 23 17:57 | 2025 Apr 22 10:19:26 | 74.0521 | 0.00346 | 6.8132 | 268.8435 | 268.5106 | 12.52833 | – |
| 2025 Apr 22 17:56 | 2025 Apr 22 10:19:26 | 74.0521 | 0.00346 | 6.8132 | 268.8435 | 268.5106 | 12.52833 | – |
| 2025 Apr 21 17:57 | 2025 Apr 15 11:49:23 | 74.0518 | 0.00346 | 7.4302 | 279.1451 | 268.5106 | 12.52833 | – |
| 2025 Apr 20 17:56 | 2025 Apr 15 11:49:23 | 74.0518 | 0.00346 | 7.4302 | 279.1451 | 268.5106 | 12.52833 | – |
| 2025 Apr 19 17:56 | 2025 Apr 15 11:49:23 | 74.0518 | 0.00346 | 7.4302 | 279.1451 | 268.5106 | 12.52833 | – |
| 2025 Apr 18 17:57 | 2025 Apr 15 11:49:23 | 74.0518 | 0.00346 | 7.4302 | 279.1451 | 268.5106 | 12.52833 | – |
| 2025 Apr 17 17:56 | 2025 Apr 15 11:49:23 | 74.0518 | 0.00346 | 7.4302 | 279.1451 | 268.5106 | 12.52833 | – |
| 2025 Apr 16 17:57 | 2025 Apr 15 11:49:23 | 74.0518 | 0.00346 | 7.4302 | 279.1451 | 268.5106 | 12.52833 | – |
| 2025 Apr 15 17:56 | 2025 Apr 10 12:48:07 | 74.0519 | 0.00346 | 7.8712 | 286.5163 | 268.5106 | 12.52833 | – |
| 2025 Apr 14 17:56 | 2025 Apr 10 12:48:07 | 74.0519 | 0.00346 | 7.8712 | 286.5163 | 268.5106 | 12.52833 | – |