| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DMSP 5D-3 F17 |
| Spacetrack catalog number | 35462 | 29522 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 21:54 | 2024 Dec 23 07:45 |
| Time of closest approach (UTC) | 2024 Dec 29 13:42:56.980 |
| Minimum distance | 2.522 km |
| Height difference | -0.359 km |
| Relative speed | 14.756 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 55.5°N, 100.3°W |
| Height | 846 km |
|