| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31656 | 35895 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 08:57 | 2024 Dec 16 09:56 |
| Time of closest approach (UTC) | 2024 Dec 25 15:39:26.131 |
| Minimum distance | 26.218 km |
| Height difference | 2.033 km |
| Relative speed | 9.841 km/s |
| Angle between velocity vectors | 82° |
| Geographic position | 70.3°N, 40.1°W |
| Height | 764 km |
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