| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31012 | 34760 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 04:22 | 2024 Dec 22 14:57 |
| Time of closest approach (UTC) | 2024 Dec 29 21:27:42.333 |
| Minimum distance | 4.953 km |
| Height difference | -3.969 km |
| Relative speed | 6.600 km/s |
| Angle between velocity vectors | 53° |
| Geographic position | 60.9°N, 172.5°E |
| Height | 837 km |
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