| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | CSL-04 DEB |
| Spacetrack catalog number | 33986 | 26191 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 11:32 | 2024 Dec 22 15:17 |
| Time of closest approach (UTC) | 2024 Dec 29 14:10:14.022 |
| Minimum distance | 3.718 km |
| Height difference | -0.029 km |
| Relative speed | 14.842 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 16.7°S, 102.0°E |
| Height | 791 km |
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