| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DMSP 5D-2 F13 DEB |
| Spacetrack catalog number | 35959 | 42300 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:36 | 2024 Dec 22 07:49 |
| Time of closest approach (UTC) | 2024 Dec 28 01:53:49.163 |
| Minimum distance | 4.972 km |
| Height difference | -1.668 km |
| Relative speed | 14.642 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 66.0°S, 66.8°E |
| Height | 809 km |
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