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 Apr 29 17:57 | 2026 Apr 24 12:25:33 | 73.6228 | 0.00270 | 17.1463 | 145.5898 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 28 17:56 | 2026 Apr 24 12:25:33 | 73.6228 | 0.00270 | 17.1463 | 145.5898 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 27 17:58 | 2026 Apr 24 12:25:33 | 73.6228 | 0.00270 | 17.1463 | 145.5898 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 26 17:58 | 2026 Apr 24 12:25:33 | 73.6228 | 0.00270 | 17.1463 | 145.5898 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 25 17:58 | 2026 Apr 24 12:25:33 | 73.6228 | 0.00270 | 17.1463 | 145.5898 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 24 17:59 | 2026 Apr 24 12:25:33 | 73.6228 | 0.00270 | 17.1463 | 145.5898 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 23 17:57 | 2026 Apr 19 08:16:08 | 73.6221 | 0.00271 | 17.6080 | 153.0508 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 22 17:57 | 2026 Apr 19 08:16:08 | 73.6221 | 0.00271 | 17.6080 | 153.0508 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 21 17:57 | 2026 Apr 19 08:16:08 | 73.6221 | 0.00271 | 17.6080 | 153.0508 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 20 17:57 | 2026 Apr 19 08:16:08 | 73.6221 | 0.00271 | 17.6080 | 153.0508 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 19 17:58 | 2026 Apr 19 08:16:08 | 73.6221 | 0.00271 | 17.6080 | 153.0508 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 18 17:56 | 2026 Apr 13 06:08:06 | 73.6217 | 0.00272 | 18.1514 | 161.8001 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 16 17:57 | 2026 Apr 13 06:08:06 | 73.6217 | 0.00272 | 18.1514 | 161.8001 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 14 17:57 | 2026 Apr 13 06:08:06 | 73.6217 | 0.00272 | 18.1514 | 161.8001 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 13 17:57 | 2026 Apr 13 06:08:06 | 73.6217 | 0.00272 | 18.1514 | 161.8001 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 12 17:57 | 2026 Apr 08 11:11:15 | 73.6216 | 0.00273 | 18.5788 | 168.6984 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 11 17:57 | 2026 Apr 08 11:11:15 | 73.6216 | 0.00273 | 18.5788 | 168.6984 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 10 17:58 | 2026 Apr 08 11:11:15 | 73.6216 | 0.00273 | 18.5788 | 168.6984 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 09 18:01 | 2026 Apr 08 11:11:15 | 73.6216 | 0.00273 | 18.5788 | 168.6984 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 08 17:57 | 2026 Apr 08 11:11:15 | 73.6216 | 0.00273 | 18.5788 | 168.6984 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 07 17:57 | 2026 Apr 02 06:59:36 | 73.6220 | 0.00274 | 19.1299 | 177.5548 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 06 17:57 | 2026 Apr 02 06:59:36 | 73.6220 | 0.00274 | 19.1299 | 177.5548 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 05 17:56 | 2026 Apr 02 06:59:36 | 73.6220 | 0.00274 | 19.1299 | 177.5548 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 04 17:57 | 2026 Apr 02 06:59:36 | 73.6220 | 0.00274 | 19.1299 | 177.5548 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 03 17:56 | 2026 Apr 02 06:59:36 | 73.6220 | 0.00274 | 19.1299 | 177.5548 | 278.1816 | 12.40797 | 4.743 |
| 2026 Apr 02 18:03 | 2026 Apr 02 06:59:36 | 73.6220 | 0.00274 | 19.1299 | 177.5548 | 278.1816 | 12.40797 | 4.743 |