| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | CSL-04 DEB |
| Spacetrack catalog number | 40792 | 26194 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 08:02 | 2024 Dec 22 19:33 |
| Time of closest approach (UTC) | 2024 Dec 26 15:37:08.607 |
| Minimum distance | 4.840 km |
| Height difference | -2.988 km |
| Relative speed | 7.061 km/s |
| Angle between velocity vectors | 56° |
| Geographic position | 63.4°N, 177.7°E |
| Height | 699 km |
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