| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Kosmos-1275 |
| Spacetrack catalog number | 47073 | 12504 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 20 23:38 | 2024 Dec 23 09:16 |
| Time of closest approach (UTC) | 2024 Dec 27 02:59:26.609 |
| Minimum distance | 2.371 km |
| Height difference | 0.384 km |
| Relative speed | 13.855 km/s |
| Angle between velocity vectors | 142° |
| Geographic position | 52.1°N, 28.1°W |
| Height | 1000 km |
|