| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DMSP 5D-2 F11 DEB |
| Spacetrack catalog number | 35031 | 28327 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 05:55 | 2024 Dec 22 10:46 |
| Time of closest approach (UTC) | 2024 Dec 26 09:05:41.490 |
| Minimum distance | 1.166 km |
| Height difference | 0.434 km |
| Relative speed | 12.745 km/s |
| Angle between velocity vectors | 118° |
| Geographic position | 74.0°S, 129.6°W |
| Height | 794 km |
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