| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34953 | 37460 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 09:54 | 2024 Dec 22 17:56 |
| Time of closest approach (UTC) | 2024 Dec 25 00:43:08.967 |
| Minimum distance | 3.802 km |
| Height difference | -2.795 km |
| Relative speed | 14.885 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 49.8°S, 80.2°E |
| Height | 740 km |
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