| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31914 | 34011 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 23:38 | 2024 Dec 23 03:57 |
| Time of closest approach (UTC) | 2024 Dec 25 17:20:41.726 |
| Minimum distance | 4.415 km |
| Height difference | 2.214 km |
| Relative speed | 9.238 km/s |
| Angle between velocity vectors | 77° |
| Geographic position | 69.3°S, 141.6°W |
| Height | 808 km |
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