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 |
| 2026 Mar 13 18:57 | 2026 Mar 10 11:26:00 | 73.6271 | 0.00278 | 21.1659 | 210.2194 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 12 18:57 | 2026 Mar 10 11:26:00 | 73.6271 | 0.00278 | 21.1659 | 210.2194 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 11 18:56 | 2026 Mar 10 11:26:00 | 73.6271 | 0.00278 | 21.1659 | 210.2194 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 10 18:56 | 2026 Mar 10 11:26:00 | 73.6271 | 0.00278 | 21.1659 | 210.2194 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 09 18:56 | 2026 Mar 04 04:24:31 | 73.6282 | 0.00279 | 21.7273 | 219.1319 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 08 18:57 | 2026 Mar 04 04:24:31 | 73.6282 | 0.00279 | 21.7273 | 219.1319 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 07 18:57 | 2026 Mar 04 04:24:31 | 73.6282 | 0.00279 | 21.7273 | 219.1319 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 06 18:56 | 2026 Mar 04 04:24:31 | 73.6282 | 0.00279 | 21.7273 | 219.1319 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 05 18:56 | 2026 Mar 04 04:24:31 | 73.6282 | 0.00279 | 21.7273 | 219.1319 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 04 18:57 | 2026 Mar 04 04:24:31 | 73.6282 | 0.00279 | 21.7273 | 219.1319 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 03 18:56 | 2026 Feb 26 13:04:28 | 73.6286 | 0.00280 | 22.2304 | 227.1230 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 02 18:57 | 2026 Feb 26 13:04:28 | 73.6286 | 0.00280 | 22.2304 | 227.1230 | 324.1782 | 12.40797 | 4.743 |
| 2026 Mar 01 18:57 | 2026 Feb 26 13:04:28 | 73.6286 | 0.00280 | 22.2304 | 227.1230 | 324.1782 | 12.40797 | 4.743 |
| 2026 Feb 28 18:56 | 2026 Feb 26 13:04:28 | 73.6286 | 0.00280 | 22.2304 | 227.1230 | 324.1782 | 12.40797 | 4.743 |
| 2026 Feb 27 19:05 | 2026 Feb 26 13:04:28 | 73.6286 | 0.00280 | 22.2304 | 227.1230 | 324.1782 | 12.40797 | 4.743 |
| 2026 Feb 26 20:45 | 2026 Feb 26 13:04:28 | 73.6286 | 0.00280 | 22.2304 | 227.1230 | 324.1782 | 12.40797 | 4.743 |