| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | CSL-04 DEB |
| Spacetrack catalog number | 34913 | 26198 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 07:23 | 2024 Dec 23 01:36 |
| Time of closest approach (UTC) | 2024 Dec 24 11:24:55.367 |
| Minimum distance | 3.129 km |
| Height difference | -0.124 km |
| Relative speed | 14.894 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 25.4°N, 47.1°W |
| Height | 766 km |
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