| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 31805 | 34793 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 18:56 | 2024 Dec 23 12:53 |
| Time of closest approach (UTC) | 2024 Dec 25 21:44:37.161 |
| Minimum distance | 2.373 km |
| Height difference | 2.030 km |
| Relative speed | 15.020 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 46.1°N, 136.1°E |
| Height | 734 km |
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