| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | CZ-4C R/B |
| Spacetrack catalog number | 34430 | 49010 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 01:42 | 2024 Dec 23 05:57 |
| Time of closest approach (UTC) | 2024 Dec 27 00:20:13.320 |
| Minimum distance | 3.463 km |
| Height difference | -3.023 km |
| Relative speed | 14.646 km/s |
| Angle between velocity vectors | 162° |
| Geographic position | 62.4°S, 18.3°W |
| Height | 821 km |
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