| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DMSP BIV-1 Rocket |
| Spacetrack catalog number | 35789 | 2422 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 22 21:23 |
| Time of closest approach (UTC) | 2024 Dec 23 17:00:48.148 |
| Minimum distance | 3.418 km |
| Height difference | -3.284 km |
| Relative speed | 7.370 km/s |
| Angle between velocity vectors | 59° |
| Geographic position | 64.8°S, 171.1°W |
| Height | 809 km |
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