| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34910 | 30978 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:21 | 2024 Dec 19 09:52 |
| Time of closest approach (UTC) | 2024 Dec 29 21:25:35.431 |
| Minimum distance | 4.875 km |
| Height difference | 3.119 km |
| Relative speed | 13.450 km/s |
| Angle between velocity vectors | 126° |
| Geographic position | 73.9°N, 34.8°W |
| Height | 795 km |
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