| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31826 | 34962 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 11:12 | 2024 Dec 22 19:26 |
| Time of closest approach (UTC) | 2024 Dec 23 15:46:24.149 |
| Minimum distance | 2.807 km |
| Height difference | -1.689 km |
| Relative speed | 14.123 km/s |
| Angle between velocity vectors | 141° |
| Geographic position | 73.1°N, 125.9°W |
| Height | 762 km |
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