| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | CSL-04 DEB |
| Spacetrack catalog number | 35462 | 26442 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 21:54 | 2024 Dec 22 22:03 |
| Time of closest approach (UTC) | 2024 Dec 26 09:22:54.756 |
| Minimum distance | 1.559 km |
| Height difference | 0.357 km |
| Relative speed | 14.821 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 58.7°S, 78.8°W |
| Height | 764 km |
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