| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 29938 | 35593 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 12:40 | 2024 Dec 18 21:09 |
| Time of closest approach (UTC) | 2024 Dec 25 15:33:48.928 |
| Minimum distance | 3.878 km |
| Height difference | -2.973 km |
| Relative speed | 14.354 km/s |
| Angle between velocity vectors | 153° |
| Geographic position | 70.3°N, 0.7°E |
| Height | 901 km |
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