| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | CZ-4B DEB |
| Spacetrack catalog number | 35031 | 38310 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 05:55 | 2024 Dec 21 17:28 |
| Time of closest approach (UTC) | 2024 Dec 26 05:42:23.619 |
| Minimum distance | 4.068 km |
| Height difference | 4.059 km |
| Relative speed | 10.603 km/s |
| Angle between velocity vectors | 91° |
| Geographic position | 71.9°S, 113.5°W |
| Height | 796 km |
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