Orbital elements of COSMOS 1661
| Launched | 17 June 1985 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 15827 |
| 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 |
| 2024 Aug 15 17:54 | 2024 Aug 12 03:00:43 | 67.8134 | 0.54431 | 9.7342 | 77.3987 | 335.7972 | 2.00549 | – |
| 2024 Aug 14 17:53 | 2024 Aug 12 03:00:43 | 67.8134 | 0.54431 | 9.7342 | 77.3987 | 335.7972 | 2.00549 | – |
| 2024 Aug 13 17:53 | 2024 Aug 12 03:00:43 | 67.8134 | 0.54431 | 9.7342 | 77.3987 | 335.7972 | 2.00549 | – |
| 2024 Aug 12 17:53 | 2024 Aug 12 03:00:43 | 67.8134 | 0.54431 | 9.7342 | 77.3987 | 335.7972 | 2.00549 | – |
| 2024 Aug 11 17:53 | 2024 Aug 06 03:24:26 | 67.8162 | 0.54399 | 9.7547 | 77.5454 | 335.7972 | 2.00549 | – |
| 2024 Aug 10 17:54 | 2024 Aug 06 03:24:26 | 67.8162 | 0.54399 | 9.7547 | 77.5454 | 335.7972 | 2.00549 | – |
| 2024 Aug 09 17:54 | 2024 Aug 06 03:24:26 | 67.8162 | 0.54399 | 9.7547 | 77.5454 | 335.7972 | 2.00549 | – |
| 2024 Aug 08 17:56 | 2024 Aug 06 03:24:26 | 67.8162 | 0.54399 | 9.7547 | 77.5454 | 335.7972 | 2.00549 | – |
| 2024 Aug 07 17:53 | 2024 Aug 06 03:24:26 | 67.8162 | 0.54399 | 9.7547 | 77.5454 | 335.7972 | 2.00549 | – |
| 2024 Aug 06 17:52 | 2024 Jul 29 15:54:38 | 67.8188 | 0.54359 | 9.7803 | 77.7293 | 335.7972 | 2.00549 | – |
| 2024 Aug 05 17:52 | 2024 Jul 29 15:54:38 | 67.8188 | 0.54359 | 9.7803 | 77.7293 | 335.7972 | 2.00549 | – |
| 2024 Aug 04 17:53 | 2024 Jul 29 15:54:38 | 67.8188 | 0.54359 | 9.7803 | 77.7293 | 335.7972 | 2.00549 | – |
| 2024 Aug 03 17:54 | 2024 Jul 29 15:54:38 | 67.8188 | 0.54359 | 9.7803 | 77.7293 | 335.7972 | 2.00549 | – |
| 2024 Aug 02 17:54 | 2024 Jul 29 15:54:38 | 67.8188 | 0.54359 | 9.7803 | 77.7293 | 335.7972 | 2.00549 | – |
| 2024 Aug 01 17:54 | 2024 Jul 29 15:54:38 | 67.8188 | 0.54359 | 9.7803 | 77.7293 | 335.7972 | 2.00549 | – |
| 2024 Jul 31 17:53 | 2024 Jul 25 16:11:02 | 67.8212 | 0.54337 | 9.7939 | 77.8276 | 335.7972 | 2.00549 | – |
| 2024 Jul 30 17:53 | 2024 Jul 25 16:11:02 | 67.8212 | 0.54337 | 9.7939 | 77.8276 | 335.7972 | 2.00549 | – |
| 2024 Jul 29 17:53 | 2024 Jul 25 16:11:02 | 67.8212 | 0.54337 | 9.7939 | 77.8276 | 335.7972 | 2.00549 | – |
| 2024 Jul 28 18:00 | 2024 Jul 25 16:11:02 | 67.8212 | 0.54337 | 9.7939 | 77.8276 | 335.7972 | 2.00549 | – |
| 2024 Jul 27 17:53 | 2024 Jul 25 16:11:02 | 67.8212 | 0.54337 | 9.7939 | 77.8276 | 335.7972 | 2.00549 | – |
| 2024 Jul 26 17:53 | 2024 Jul 21 16:27:31 | 67.8233 | 0.54314 | 9.8076 | 77.9263 | 335.7972 | 2.00549 | – |
| 2024 Jul 25 17:54 | 2024 Jul 21 16:27:31 | 67.8233 | 0.54314 | 9.8076 | 77.9263 | 335.7972 | 2.00549 | – |
| 2024 Jul 24 17:53 | 2024 Jul 21 16:27:31 | 67.8233 | 0.54314 | 9.8076 | 77.9263 | 335.7972 | 2.00549 | – |
| 2024 Jul 23 17:52 | 2024 Jul 21 16:27:31 | 67.8233 | 0.54314 | 9.8076 | 77.9263 | 335.7972 | 2.00549 | – |
| 2024 Jul 22 17:52 | 2024 Jul 21 16:27:31 | 67.8233 | 0.54314 | 9.8076 | 77.9263 | 335.7972 | 2.00549 | – |
| 2024 Jul 21 17:52 | 2024 Jul 15 16:52:41 | 67.8259 | 0.54282 | 9.8280 | 78.0744 | 335.7972 | 2.00549 | – |
| 2024 Jul 20 17:53 | 2024 Jul 15 16:52:41 | 67.8259 | 0.54282 | 9.8280 | 78.0744 | 335.7972 | 2.00549 | – |
| 2024 Jul 19 17:53 | 2024 Jul 15 16:52:41 | 67.8259 | 0.54282 | 9.8280 | 78.0744 | 335.7972 | 2.00549 | – |