| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DMSP 5D-2 F11 DEB |
| Spacetrack catalog number | 34430 | 28349 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 01:42 | 2024 Dec 20 15:38 |
| Time of closest approach (UTC) | 2024 Dec 26 18:19:23.924 |
| Minimum distance | 4.717 km |
| Height difference | -4.601 km |
| Relative speed | 15.001 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 29.2°N, 131.1°W |
| Height | 724 km |
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