| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Cosmos 1867 |
| Spacetrack catalog number | 35031 | 18187 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 05:55 | 2024 Dec 22 19:58 |
| Time of closest approach (UTC) | 2024 Dec 24 16:53:38.404 |
| Minimum distance | 1.170 km |
| Height difference | -0.015 km |
| Relative speed | 9.967 km/s |
| Angle between velocity vectors | 84° |
| Geographic position | 61.3°S, 53.7°E |
| Height | 797 km |
|