Orbital elements of COSMOS 1859
| Launched | 15 June 1987 | 
| Flight ended | – | 
| Launch site | Plesetsk Missile and Space Complex, Russia | 
| Owner | Commonwealth of Independent States (former USSR) | 
| NORAD ID | 18120 | 
| 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 10:39:59 | 74.0040 | 0.00573 | 21.7733 | 354.5260 | 111.3542 | 12.57951 | – | 
| 2025 Nov 02 18:57 | 2025 Oct 29 13:24:36 | 74.0046 | 0.00572 | 22.1233 | 0.4460 | 111.3542 | 12.57951 | – | 
| 2025 Nov 01 18:58 | 2025 Oct 29 13:24:36 | 74.0046 | 0.00572 | 22.1233 | 0.4460 | 111.3542 | 12.57951 | – | 
| 2025 Oct 31 18:57 | 2025 Oct 29 13:24:36 | 74.0046 | 0.00572 | 22.1233 | 0.4460 | 111.3542 | 12.57951 | – | 
| 2025 Oct 30 18:57 | 2025 Oct 29 13:24:36 | 74.0046 | 0.00572 | 22.1233 | 0.4460 | 111.3542 | 12.57951 | – | 
| 2025 Oct 29 18:57 | 2025 Oct 29 13:24:36 | 74.0046 | 0.00572 | 22.1233 | 0.4460 | 111.3542 | 12.57951 | – | 
| 2025 Oct 28 18:57 | 2025 Oct 23 19:47:53 | 74.0056 | 0.00571 | 22.6397 | 9.2131 | 111.3542 | 12.57951 | – | 
| 2025 Oct 27 18:57 | 2025 Oct 23 19:47:53 | 74.0056 | 0.00571 | 22.6397 | 9.2131 | 111.3542 | 12.57951 | – | 
| 2025 Oct 26 18:57 | 2025 Oct 23 19:47:53 | 74.0056 | 0.00571 | 22.6397 | 9.2131 | 111.3542 | 12.57951 | – | 
| 2025 Oct 25 17:57 | 2025 Oct 23 19:47:53 | 74.0056 | 0.00571 | 22.6397 | 9.2131 | 111.3542 | 12.57951 | – | 
| 2025 Oct 24 17:57 | 2025 Oct 23 19:47:53 | 74.0056 | 0.00571 | 22.6397 | 9.2131 | 111.3542 | 12.57951 | – | 
| 2025 Oct 22 17:56 | 2025 Oct 18 07:52:02 | 74.0066 | 0.00570 | 23.1348 | 17.6177 | 111.3542 | 12.57951 | – | 
| 2025 Oct 21 17:56 | 2025 Oct 18 07:52:02 | 74.0066 | 0.00570 | 23.1348 | 17.6177 | 111.3542 | 12.57951 | – | 
| 2025 Oct 20 17:56 | 2025 Oct 18 07:52:02 | 74.0066 | 0.00570 | 23.1348 | 17.6177 | 111.3542 | 12.57951 | – | 
| 2025 Oct 19 17:56 | 2025 Oct 18 07:52:02 | 74.0066 | 0.00570 | 23.1348 | 17.6177 | 111.3542 | 12.57951 | – | 
| 2025 Oct 18 17:56 | 2025 Oct 18 07:52:02 | 74.0066 | 0.00570 | 23.1348 | 17.6177 | 111.3542 | 12.57951 | – | 
| 2025 Oct 17 17:56 | 2025 Oct 07 12:03:31 | 74.0079 | 0.00568 | 0.1096 | 34.2329 | 111.3542 | 12.57951 | – | 
| 2025 Oct 16 17:56 | 2025 Oct 07 12:03:31 | 74.0079 | 0.00568 | 0.1096 | 34.2329 | 111.3542 | 12.57951 | – | 
| 2025 Oct 15 17:56 | 2025 Oct 07 12:03:31 | 74.0079 | 0.00568 | 0.1096 | 34.2329 | 111.3542 | 12.57951 | – | 
| 2025 Oct 14 17:56 | 2025 Oct 07 12:03:31 | 74.0079 | 0.00568 | 0.1096 | 34.2329 | 111.3542 | 12.57951 | – | 
| 2025 Oct 12 17:56 | 2025 Oct 07 12:03:31 | 74.0079 | 0.00568 | 0.1096 | 34.2329 | 111.3542 | 12.57951 | – | 
| 2025 Oct 11 17:57 | 2025 Oct 07 12:03:31 | 74.0079 | 0.00568 | 0.1096 | 34.2329 | 111.3542 | 12.57951 | – | 
| 2025 Oct 09 17:56 | 2025 Oct 07 12:03:31 | 74.0079 | 0.00568 | 0.1096 | 34.2329 | 111.3542 | 12.57951 | – | 
| 2025 Oct 08 17:56 | 2025 Oct 07 12:03:31 | 74.0079 | 0.00568 | 0.1096 | 34.2329 | 111.3542 | 12.57951 | – | 
| 2025 Oct 07 17:56 | 2025 Oct 07 12:03:31 | 74.0079 | 0.00568 | 0.1096 | 34.2329 | 111.3542 | 12.57951 | – |