| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Kosmos-249 |
| Spacetrack catalog number | 35789 | 3606 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 22 10:22 |
| Time of closest approach (UTC) | 2024 Dec 29 07:04:03.455 |
| Minimum distance | 3.487 km |
| Height difference | -2.901 km |
| Relative speed | 14.047 km/s |
| Angle between velocity vectors | 135° |
| Geographic position | 13.8°S, 4.5°W |
| Height | 754 km |
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