| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DMSP 5D-2 F13 DEB |
| Spacetrack catalog number | 35433 | 42278 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 18 02:11 | 2024 Dec 21 12:24 |
| Time of closest approach (UTC) | 2024 Dec 25 14:29:55.518 |
| Minimum distance | 1.774 km |
| Height difference | -1.733 km |
| Relative speed | 10.945 km/s |
| Angle between velocity vectors | 95° |
| Geographic position | 72.3°S, 165.5°W |
| Height | 819 km |
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