| Primary satellite | Secondary satellite |
| Name | Cosmos 1850 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 18096 | 34122 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 06 17:28 | 2024 Dec 06 14:47 |
| Time of closest approach (UTC) | 2024 Nov 09 15:11:55.319 |
| Minimum distance | 479.668 km |
| Height difference | -4.027 km |
| Relative speed | 13.496 km/s |
| Angle between velocity vectors | 130° |
| Geographic position | 53.9°S, 133.3°W |
| Height | 781 km |
|