Orbital elements of COSMOS 1861
| Launched | 22 June 1987 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 18129 |
| 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 Sep 15 17:56 | 2025 Sep 15 00:16:20 | 82.9298 | 0.00119 | 11.1044 | 5.7241 | 4.7689 | 13.73236 | 6.743 |
| 2025 Sep 12 17:57 | 2025 Sep 03 05:44:13 | 82.9296 | 0.00126 | 11.6850 | 36.7693 | 4.7689 | 13.73236 | 6.743 |
| 2025 Sep 11 17:57 | 2025 Sep 03 05:44:13 | 82.9296 | 0.00126 | 11.6850 | 36.7693 | 4.7689 | 13.73236 | 6.743 |
| 2025 Sep 10 17:56 | 2025 Sep 03 05:44:13 | 82.9296 | 0.00126 | 11.6850 | 36.7693 | 4.7689 | 13.73236 | 6.743 |
| 2025 Sep 08 17:57 | 2025 Sep 03 05:44:13 | 82.9296 | 0.00126 | 11.6850 | 36.7693 | 4.7689 | 13.73236 | 6.743 |
| 2025 Sep 07 17:56 | 2025 Sep 03 05:44:13 | 82.9296 | 0.00126 | 11.6850 | 36.7693 | 4.7689 | 13.73236 | 6.743 |
| 2025 Sep 06 20:41 | 2025 Sep 03 05:44:13 | 82.9296 | 0.00126 | 11.6850 | 36.7693 | 4.7689 | 13.73236 | 6.743 |
| 2025 Sep 03 17:57 | 2025 Sep 03 05:44:13 | 82.9296 | 0.00126 | 11.6850 | 36.7693 | 4.7689 | 13.73236 | 6.743 |
| 2025 Sep 02 17:56 | 2025 Aug 27 21:03:45 | 82.9290 | 0.00129 | 11.9987 | 53.0760 | 4.7689 | 13.73236 | 6.743 |
| 2025 Sep 01 17:56 | 2025 Aug 27 21:03:45 | 82.9290 | 0.00129 | 11.9987 | 53.0760 | 4.7689 | 13.73236 | 6.743 |
| 2025 Aug 31 17:56 | 2025 Aug 27 21:03:45 | 82.9290 | 0.00129 | 11.9987 | 53.0760 | 4.7689 | 13.73236 | 6.743 |
| 2025 Aug 30 17:56 | 2025 Aug 27 21:03:45 | 82.9290 | 0.00129 | 11.9987 | 53.0760 | 4.7689 | 13.73236 | 6.743 |
| 2025 Aug 29 17:56 | 2025 Aug 27 21:03:45 | 82.9290 | 0.00129 | 11.9987 | 53.0760 | 4.7689 | 13.73236 | 6.743 |
| 2025 Aug 28 17:57 | 2025 Aug 27 21:03:45 | 82.9290 | 0.00129 | 11.9987 | 53.0760 | 4.7689 | 13.73236 | 6.743 |
| 2025 Aug 27 17:56 | 2025 Aug 23 07:09:52 | 82.9283 | 0.00131 | 12.2245 | 64.6310 | 4.7689 | 13.73236 | 6.743 |
| 2025 Aug 26 17:56 | 2025 Aug 23 07:09:52 | 82.9283 | 0.00131 | 12.2245 | 64.6310 | 4.7689 | 13.73236 | 6.743 |
| 2025 Aug 25 17:56 | 2025 Aug 23 07:09:52 | 82.9283 | 0.00131 | 12.2245 | 64.6310 | 4.7689 | 13.73236 | 6.743 |
| 2025 Aug 24 17:56 | 2025 Aug 23 07:09:52 | 82.9283 | 0.00131 | 12.2245 | 64.6310 | 4.7689 | 13.73236 | 6.743 |
| 2025 Aug 23 17:56 | 2025 Aug 23 07:09:52 | 82.9283 | 0.00131 | 12.2245 | 64.6310 | 4.7689 | 13.73236 | 6.743 |
| 2025 Aug 22 17:56 | 2025 Aug 17 23:17:13 | 82.9277 | 0.00132 | 12.4874 | 77.9067 | 4.7689 | 13.73236 | 6.743 |