| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33994 | 31348 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 12:16 | 2024 Dec 21 06:39 |
| Time of closest approach (UTC) | 2024 Dec 26 12:07:30.761 |
| Minimum distance | 4.860 km |
| Height difference | 4.859 km |
| Relative speed | 14.849 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 55.5°N, 1.6°W |
| Height | 777 km |
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