| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31179 | 34760 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 06:50 | 2024 Dec 22 14:57 |
| Time of closest approach (UTC) | 2024 Dec 25 06:55:00.242 |
| Minimum distance | 2.726 km |
| Height difference | 1.917 km |
| Relative speed | 14.965 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 45.3°S, 3.9°W |
| Height | 790 km |
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