| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31667 | 47052 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 08:44 | 2024 Dec 17 13:42 |
| Time of closest approach (UTC) | 2024 Dec 25 23:03:56.014 |
| Minimum distance | 3.810 km |
| Height difference | -3.423 km |
| Relative speed | 8.879 km/s |
| Angle between velocity vectors | 73° |
| Geographic position | 68.4°S, 137.8°E |
| Height | 838 km |
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