Orbital elements of COSMOS 1660
| Launched | 13 June 1985 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 15821 |
| 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 Dec 14 18:56 | 2025 Dec 12 06:04:45 | 73.6262 | 0.00278 | 5.0378 | 333.8990 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 13 18:56 | 2025 Dec 12 06:04:45 | 73.6262 | 0.00278 | 5.0378 | 333.8990 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 12 18:57 | 2025 Dec 12 06:04:45 | 73.6262 | 0.00278 | 5.0378 | 333.8990 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 11 18:56 | 2025 Dec 07 05:55:44 | 73.6258 | 0.00277 | 5.4845 | 340.9708 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 10 18:56 | 2025 Dec 07 05:55:44 | 73.6258 | 0.00277 | 5.4845 | 340.9708 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 09 18:56 | 2025 Dec 07 05:55:44 | 73.6258 | 0.00277 | 5.4845 | 340.9708 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 08 18:56 | 2025 Dec 07 05:55:44 | 73.6258 | 0.00277 | 5.4845 | 340.9708 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 07 18:56 | 2025 Dec 07 05:55:44 | 73.6258 | 0.00277 | 5.4845 | 340.9708 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 06 18:56 | 2025 Dec 02 12:02:31 | 73.6253 | 0.00276 | 5.9079 | 347.7351 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 05 18:57 | 2025 Dec 02 12:02:31 | 73.6253 | 0.00276 | 5.9079 | 347.7351 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 04 18:57 | 2025 Dec 02 12:02:31 | 73.6253 | 0.00276 | 5.9079 | 347.7351 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 03 18:56 | 2025 Dec 02 12:02:31 | 73.6253 | 0.00276 | 5.9079 | 347.7351 | 85.9488 | 12.40796 | 4.743 |
| 2025 Dec 02 18:56 | 2025 Dec 02 12:02:31 | 73.6253 | 0.00276 | 5.9079 | 347.7351 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 30 18:57 | 2025 Nov 25 11:38:24 | 73.6239 | 0.00274 | 6.5340 | 357.9589 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 29 18:56 | 2025 Nov 25 11:38:24 | 73.6239 | 0.00274 | 6.5340 | 357.9589 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 28 18:57 | 2025 Nov 25 11:38:24 | 73.6239 | 0.00274 | 6.5340 | 357.9589 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 27 18:57 | 2025 Nov 25 11:38:24 | 73.6239 | 0.00274 | 6.5340 | 357.9589 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 26 18:57 | 2025 Nov 25 11:38:24 | 73.6239 | 0.00274 | 6.5340 | 357.9589 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 25 18:57 | 2025 Nov 25 11:38:24 | 73.6239 | 0.00274 | 6.5340 | 357.9589 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 24 18:56 | 2025 Nov 20 07:33:53 | 73.6224 | 0.00273 | 6.9953 | 5.3303 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 23 18:57 | 2025 Nov 20 07:33:53 | 73.6224 | 0.00273 | 6.9953 | 5.3303 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 21 18:57 | 2025 Nov 20 07:33:53 | 73.6224 | 0.00273 | 6.9953 | 5.3303 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 20 18:56 | 2025 Nov 20 07:33:53 | 73.6224 | 0.00273 | 6.9953 | 5.3303 | 85.9488 | 12.40796 | 4.743 |
| 2025 Nov 18 18:57 | 2025 Nov 08 16:54:42 | 73.6211 | 0.00271 | 8.0313 | 22.1925 | 85.9488 | 12.40796 | 4.743 |