| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DMSP 5D-2 F13 DEB |
| Spacetrack catalog number | 35789 | 40499 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 22 21:33 |
| Time of closest approach (UTC) | 2024 Dec 25 23:28:31.852 |
| Minimum distance | 4.533 km |
| Height difference | -3.470 km |
| Relative speed | 14.876 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 43.7°N, 73.0°W |
| Height | 784 km |
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