| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DMSP 5D-2 F13 DEB |
| Spacetrack catalog number | 35459 | 42315 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 16:06 | 2024 Dec 22 13:51 |
| Time of closest approach (UTC) | 2024 Dec 28 21:48:49.155 |
| Minimum distance | 4.865 km |
| Height difference | -4.162 km |
| Relative speed | 9.031 km/s |
| Angle between velocity vectors | 74° |
| Geographic position | 68.8°N, 177.8°W |
| Height | 771 km |
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