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 |
| 2026 Apr 29 17:57 | 2026 Apr 24 00:15:11 | 74.0566 | 0.00334 | 22.2157 | 74.1163 | 81.3286 | 12.52840 | – |
| 2026 Apr 28 17:56 | 2026 Apr 24 00:15:11 | 74.0566 | 0.00334 | 22.2157 | 74.1163 | 81.3286 | 12.52840 | – |
| 2026 Apr 27 17:58 | 2026 Apr 24 00:15:11 | 74.0566 | 0.00334 | 22.2157 | 74.1163 | 81.3286 | 12.52840 | – |
| 2026 Apr 26 17:58 | 2026 Apr 24 00:15:11 | 74.0566 | 0.00334 | 22.2157 | 74.1163 | 81.3286 | 12.52840 | – |
| 2026 Apr 25 17:58 | 2026 Apr 24 00:15:11 | 74.0566 | 0.00334 | 22.2157 | 74.1163 | 81.3286 | 12.52840 | – |
| 2026 Apr 24 17:59 | 2026 Apr 24 00:15:11 | 74.0566 | 0.00334 | 22.2157 | 74.1163 | 81.3286 | 12.52840 | – |
| 2026 Apr 23 17:57 | 2026 Apr 19 09:12:04 | 74.0575 | 0.00334 | 22.6272 | 81.2201 | 81.3286 | 12.52840 | – |
| 2026 Apr 22 17:57 | 2026 Apr 19 09:12:04 | 74.0575 | 0.00334 | 22.6272 | 81.2201 | 81.3286 | 12.52840 | – |
| 2026 Apr 21 17:57 | 2026 Apr 19 09:12:04 | 74.0575 | 0.00334 | 22.6272 | 81.2201 | 81.3286 | 12.52840 | – |
| 2026 Apr 20 17:57 | 2026 Apr 19 09:12:04 | 74.0575 | 0.00334 | 22.6272 | 81.2201 | 81.3286 | 12.52840 | – |
| 2026 Apr 19 17:58 | 2026 Apr 19 09:12:04 | 74.0575 | 0.00334 | 22.6272 | 81.2201 | 81.3286 | 12.52840 | – |
| 2026 Apr 18 17:56 | 2026 Apr 13 01:45:18 | 74.0587 | 0.00334 | 23.1883 | 90.9382 | 81.3286 | 12.52840 | – |
| 2026 Apr 16 17:57 | 2026 Apr 13 01:45:18 | 74.0587 | 0.00334 | 23.1883 | 90.9382 | 81.3286 | 12.52840 | – |
| 2026 Apr 14 17:57 | 2026 Apr 13 01:45:18 | 74.0587 | 0.00334 | 23.1883 | 90.9382 | 81.3286 | 12.52840 | – |
| 2026 Apr 13 17:57 | 2026 Apr 13 01:45:18 | 74.0587 | 0.00334 | 23.1883 | 90.9382 | 81.3286 | 12.52840 | – |
| 2026 Apr 12 17:57 | 2026 Apr 08 10:40:04 | 74.0594 | 0.00334 | 23.5998 | 98.0898 | 81.3286 | 12.52840 | – |
| 2026 Apr 11 17:57 | 2026 Apr 08 10:40:04 | 74.0594 | 0.00334 | 23.5998 | 98.0898 | 81.3286 | 12.52840 | – |
| 2026 Apr 10 17:58 | 2026 Apr 08 10:40:04 | 74.0594 | 0.00334 | 23.5998 | 98.0898 | 81.3286 | 12.52840 | – |
| 2026 Apr 09 18:01 | 2026 Apr 08 10:40:04 | 74.0594 | 0.00334 | 23.5998 | 98.0898 | 81.3286 | 12.52840 | – |
| 2026 Apr 08 17:57 | 2026 Apr 08 10:40:04 | 74.0594 | 0.00334 | 23.5998 | 98.0898 | 81.3286 | 12.52840 | – |
| 2026 Apr 07 17:57 | 2026 Apr 02 05:05:54 | 74.0598 | 0.00333 | 0.1539 | 107.7170 | 81.3286 | 12.52840 | – |
| 2026 Apr 06 17:57 | 2026 Apr 02 05:05:54 | 74.0598 | 0.00333 | 0.1539 | 107.7170 | 81.3286 | 12.52840 | – |
| 2026 Apr 05 17:56 | 2026 Apr 02 05:05:54 | 74.0598 | 0.00333 | 0.1539 | 107.7170 | 81.3286 | 12.52840 | – |
| 2026 Apr 04 17:57 | 2026 Apr 02 05:05:54 | 74.0598 | 0.00333 | 0.1539 | 107.7170 | 81.3286 | 12.52840 | – |
| 2026 Apr 03 17:56 | 2026 Apr 02 05:05:54 | 74.0598 | 0.00333 | 0.1539 | 107.7170 | 81.3286 | 12.52840 | – |
| 2026 Apr 02 18:03 | 2026 Apr 02 05:05:54 | 74.0598 | 0.00333 | 0.1539 | 107.7170 | 81.3286 | 12.52840 | – |