| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | CSL-04 DEB |
| Spacetrack catalog number | 33986 | 26198 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 11:32 | 2024 Dec 23 01:36 |
| Time of closest approach (UTC) | 2024 Dec 27 11:47:40.309 |
| Minimum distance | 3.713 km |
| Height difference | 1.856 km |
| Relative speed | 14.784 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 61.5°N, 107.1°E |
| Height | 761 km |
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