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 Jun 13 17:56 | 2026 Jun 11 18:54:45 | 74.0560 | 0.00340 | 17.8778 | 359.4510 | 119.5576 | 12.52841 | – |
| 2026 Jun 12 17:56 | 2026 Jun 11 18:54:45 | 74.0560 | 0.00340 | 17.8778 | 359.4510 | 119.5576 | 12.52841 | – |
| 2026 Jun 11 17:57 | 2026 Jun 06 16:12:51 | 74.0563 | 0.00339 | 18.3324 | 7.2592 | 119.5576 | 12.52841 | – |
| 2026 Jun 10 17:56 | 2026 Jun 06 16:12:51 | 74.0563 | 0.00339 | 18.3324 | 7.2592 | 119.5576 | 12.52841 | – |
| 2026 Jun 09 17:57 | 2026 Jun 06 16:12:51 | 74.0563 | 0.00339 | 18.3324 | 7.2592 | 119.5576 | 12.52841 | – |
| 2026 Jun 08 17:56 | 2026 Jun 06 16:12:51 | 74.0563 | 0.00339 | 18.3324 | 7.2592 | 119.5576 | 12.52841 | – |
| 2026 Jun 07 17:56 | 2026 Jun 06 16:12:51 | 74.0563 | 0.00339 | 18.3324 | 7.2592 | 119.5576 | 12.52841 | – |
| 2026 Jun 06 17:56 | 2026 May 31 12:27:12 | 74.0559 | 0.00338 | 18.8799 | 16.6552 | 119.5576 | 12.52841 | – |
| 2026 Jun 05 17:56 | 2026 May 31 12:27:12 | 74.0559 | 0.00338 | 18.8799 | 16.6552 | 119.5576 | 12.52841 | – |
| 2026 Jun 04 17:57 | 2026 May 31 12:27:12 | 74.0559 | 0.00338 | 18.8799 | 16.6552 | 119.5576 | 12.52841 | – |
| 2026 Jun 02 17:56 | 2026 May 31 12:27:12 | 74.0559 | 0.00338 | 18.8799 | 16.6552 | 119.5576 | 12.52841 | – |
| 2026 Jun 01 17:57 | 2026 May 31 12:27:12 | 74.0559 | 0.00338 | 18.8799 | 16.6552 | 119.5576 | 12.52841 | – |
| 2026 May 31 17:58 | 2026 May 31 12:27:12 | 74.0559 | 0.00338 | 18.8799 | 16.6552 | 119.5576 | 12.52841 | – |
| 2026 May 30 17:57 | 2026 May 26 04:37:06 | 74.0554 | 0.00337 | 19.3536 | 24.7992 | 119.5576 | 12.52841 | – |
| 2026 May 29 17:57 | 2026 May 26 04:37:06 | 74.0554 | 0.00337 | 19.3536 | 24.7992 | 119.5576 | 12.52841 | – |
| 2026 May 28 17:56 | 2026 May 26 04:37:06 | 74.0554 | 0.00337 | 19.3536 | 24.7992 | 119.5576 | 12.52841 | – |
| 2026 May 27 17:57 | 2026 May 26 04:37:06 | 74.0554 | 0.00337 | 19.3536 | 24.7992 | 119.5576 | 12.52841 | – |
| 2026 May 26 17:57 | 2026 May 26 04:37:06 | 74.0554 | 0.00337 | 19.3536 | 24.7992 | 119.5576 | 12.52841 | – |
| 2026 May 25 17:57 | 2026 May 21 10:45:36 | 74.0550 | 0.00337 | 19.7755 | 32.0735 | 119.5576 | 12.52841 | – |
| 2026 May 24 17:57 | 2026 May 21 10:45:36 | 74.0550 | 0.00337 | 19.7755 | 32.0735 | 119.5576 | 12.52841 | – |
| 2026 May 23 17:58 | 2026 May 21 10:45:36 | 74.0550 | 0.00337 | 19.7755 | 32.0735 | 119.5576 | 12.52841 | – |
| 2026 May 22 17:57 | 2026 May 21 10:45:36 | 74.0550 | 0.00337 | 19.7755 | 32.0735 | 119.5576 | 12.52841 | – |
| 2026 May 21 17:57 | 2026 May 21 10:45:36 | 74.0550 | 0.00337 | 19.7755 | 32.0735 | 119.5576 | 12.52841 | – |
| 2026 May 20 17:57 | 2026 May 16 10:02:02 | 74.0548 | 0.00336 | 20.2229 | 39.7793 | 119.5576 | 12.52841 | – |
| 2026 May 19 17:58 | 2026 May 16 10:02:02 | 74.0548 | 0.00336 | 20.2229 | 39.7793 | 119.5576 | 12.52841 | – |
| 2026 May 18 17:57 | 2026 May 16 10:02:02 | 74.0548 | 0.00336 | 20.2229 | 39.7793 | 119.5576 | 12.52841 | – |
| 2026 May 17 17:57 | 2026 May 16 10:02:02 | 74.0548 | 0.00336 | 20.2229 | 39.7793 | 119.5576 | 12.52841 | – |