| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33986 | 31078 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 11:32 | 2024 Dec 22 15:13 |
| Time of closest approach (UTC) | 2024 Dec 24 05:34:24.874 |
| Minimum distance | 1.094 km |
| Height difference | 0.207 km |
| Relative speed | 14.930 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 42.9°N, 134.0°W |
| Height | 764 km |
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