Orbital elements of COSMOS 1666
| Launched | 7 July 1985 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 15889 |
| 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 11 17:56 | 2025 May 09 02:53:06 | 82.4571 | 0.00019 | 22.6200 | 23.8866 | 336.2496 | 15.90054 | 4.743 |
| 2025 May 10 17:56 | 2025 May 09 02:53:06 | 82.4571 | 0.00019 | 22.6200 | 23.8866 | 336.2496 | 15.90054 | 4.743 |
| 2025 May 09 17:57 | 2025 May 09 02:53:06 | 82.4571 | 0.00019 | 22.6200 | 23.8866 | 336.2496 | 15.90054 | 4.743 |
| 2025 May 08 17:56 | 2025 May 03 13:51:59 | 82.4585 | 0.00036 | 23.0295 | 58.1266 | 336.2496 | 15.90054 | 4.743 |
| 2025 May 07 17:56 | 2025 May 03 13:51:59 | 82.4585 | 0.00036 | 23.0295 | 58.1266 | 336.2496 | 15.90054 | 4.743 |
| 2025 May 06 17:57 | 2025 May 03 13:51:59 | 82.4585 | 0.00036 | 23.0295 | 58.1266 | 336.2496 | 15.90054 | 4.743 |
| 2025 May 05 17:56 | 2025 May 03 13:51:59 | 82.4585 | 0.00036 | 23.0295 | 58.1266 | 336.2496 | 15.90054 | 4.743 |
| 2025 May 04 17:57 | 2025 May 03 13:51:59 | 82.4585 | 0.00036 | 23.0295 | 58.1266 | 336.2496 | 15.90054 | 4.743 |
| 2025 May 03 17:57 | 2025 May 03 13:51:59 | 82.4585 | 0.00036 | 23.0295 | 58.1266 | 336.2496 | 15.90054 | 4.743 |
| 2025 May 01 17:56 | 2025 Apr 22 03:37:05 | 82.4639 | 0.00079 | 23.8689 | 87.2146 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 30 17:56 | 2025 Apr 22 03:37:05 | 82.4639 | 0.00079 | 23.8689 | 87.2146 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 29 17:57 | 2025 Apr 22 03:37:05 | 82.4639 | 0.00079 | 23.8689 | 87.2146 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 27 17:56 | 2025 Apr 22 03:37:05 | 82.4639 | 0.00079 | 23.8689 | 87.2146 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 26 17:57 | 2025 Apr 22 03:37:05 | 82.4639 | 0.00079 | 23.8689 | 87.2146 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 25 17:56 | 2025 Apr 22 03:37:05 | 82.4639 | 0.00079 | 23.8689 | 87.2146 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 24 17:56 | 2025 Apr 22 03:37:05 | 82.4639 | 0.00079 | 23.8689 | 87.2146 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 23 17:57 | 2025 Apr 22 03:37:05 | 82.4639 | 0.00079 | 23.8689 | 87.2146 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 22 17:56 | 2025 Apr 22 03:37:05 | 82.4639 | 0.00079 | 23.8689 | 87.2146 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 21 17:57 | 2025 Apr 16 10:57:23 | 82.4636 | 0.00086 | 0.2849 | 97.4026 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 20 17:56 | 2025 Apr 16 10:57:23 | 82.4636 | 0.00086 | 0.2849 | 97.4026 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 19 17:56 | 2025 Apr 16 10:57:23 | 82.4636 | 0.00086 | 0.2849 | 97.4026 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 18 17:57 | 2025 Apr 16 10:57:23 | 82.4636 | 0.00086 | 0.2849 | 97.4026 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 17 17:56 | 2025 Apr 16 10:57:23 | 82.4636 | 0.00086 | 0.2849 | 97.4026 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 16 17:57 | 2025 Apr 16 10:57:23 | 82.4636 | 0.00086 | 0.2849 | 97.4026 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 15 17:56 | 2025 Apr 11 04:45:50 | 82.4652 | 0.00093 | 0.6679 | 105.4003 | 336.2496 | 15.90054 | 4.743 |
| 2025 Apr 14 17:56 | 2025 Apr 11 04:45:50 | 82.4652 | 0.00093 | 0.6679 | 105.4003 | 336.2496 | 15.90054 | 4.743 |