| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DMSP 5D-2 F13 DEB |
| Spacetrack catalog number | 35459 | 40516 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 16:06 | 2024 Dec 20 19:03 |
| Time of closest approach (UTC) | 2024 Dec 24 03:16:44.331 |
| Minimum distance | 4.286 km |
| Height difference | -4.282 km |
| Relative speed | 12.258 km/s |
| Angle between velocity vectors | 111° |
| Geographic position | 73.6°S, 95.7°W |
| Height | 804 km |
|