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 Nov 03 18:57 | 2025 Nov 02 11:23:27 | 82.9227 | 0.00108 | 8.7131 | 219.1819 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Nov 02 18:57 | 2025 Oct 29 12:57:48 | 82.9230 | 0.00106 | 8.9073 | 231.2114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Nov 01 18:58 | 2025 Oct 29 12:57:48 | 82.9230 | 0.00106 | 8.9073 | 231.2114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 31 18:57 | 2025 Oct 29 12:57:48 | 82.9230 | 0.00106 | 8.9073 | 231.2114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 30 18:57 | 2025 Oct 29 12:57:48 | 82.9230 | 0.00106 | 8.9073 | 231.2114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 29 18:57 | 2025 Oct 29 12:57:48 | 82.9230 | 0.00106 | 8.9073 | 231.2114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 28 18:57 | 2025 Oct 23 22:33:38 | 82.9237 | 0.00104 | 9.1837 | 248.7129 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 27 18:57 | 2025 Oct 23 22:33:38 | 82.9237 | 0.00104 | 9.1837 | 248.7129 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 26 18:57 | 2025 Oct 23 22:33:38 | 82.9237 | 0.00104 | 9.1837 | 248.7129 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 25 17:57 | 2025 Oct 23 22:33:38 | 82.9237 | 0.00104 | 9.1837 | 248.7129 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 24 17:57 | 2025 Oct 23 22:33:38 | 82.9237 | 0.00104 | 9.1837 | 248.7129 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 22 17:56 | 2025 Oct 18 02:41:13 | 82.9244 | 0.00104 | 9.4714 | 267.0500 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 21 17:56 | 2025 Oct 18 02:41:13 | 82.9244 | 0.00104 | 9.4714 | 267.0500 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 20 17:56 | 2025 Oct 18 02:41:13 | 82.9244 | 0.00104 | 9.4714 | 267.0500 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 19 17:56 | 2025 Oct 18 02:41:13 | 82.9244 | 0.00104 | 9.4714 | 267.0500 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 18 17:56 | 2025 Oct 18 02:41:13 | 82.9244 | 0.00104 | 9.4714 | 267.0500 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 17 17:56 | 2025 Oct 07 09:54:20 | 82.9263 | 0.00106 | 9.9994 | 300.6114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 16 17:56 | 2025 Oct 07 09:54:20 | 82.9263 | 0.00106 | 9.9994 | 300.6114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 15 17:56 | 2025 Oct 07 09:54:20 | 82.9263 | 0.00106 | 9.9994 | 300.6114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 14 17:56 | 2025 Oct 07 09:54:20 | 82.9263 | 0.00106 | 9.9994 | 300.6114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 12 17:56 | 2025 Oct 07 09:54:20 | 82.9263 | 0.00106 | 9.9994 | 300.6114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 11 17:57 | 2025 Oct 07 09:54:20 | 82.9263 | 0.00106 | 9.9994 | 300.6114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 09 17:56 | 2025 Oct 07 09:54:20 | 82.9263 | 0.00106 | 9.9994 | 300.6114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 08 17:56 | 2025 Oct 07 09:54:20 | 82.9263 | 0.00106 | 9.9994 | 300.6114 | 202.5661 | 13.73243 | 6.743 | 
| 2025 Oct 07 17:56 | 2025 Oct 07 09:54:20 | 82.9263 | 0.00106 | 9.9994 | 300.6114 | 202.5661 | 13.73243 | 6.743 |