| Primary satellite | Secondary satellite |
| Name | Cosmos 1850 | deb Transtage 4 |
| Spacetrack catalog number | 18095 | 1859 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 21:05 | 2024 Dec 23 05:08 |
| Time of closest approach (UTC) | 2024 Dec 27 00:34:10.633 |
| Minimum distance | 2.832 km |
| Height difference | -2.818 km |
| Relative speed | 8.423 km/s |
| Angle between velocity vectors | 69° |
| Geographic position | 32.2°N, 24.8°E |
| Height | 775 km |
|