| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35959 | 37404 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:36 | 2024 Dec 23 12:18 |
| Time of closest approach (UTC) | 2024 Dec 26 07:07:24.927 |
| Minimum distance | 3.393 km |
| Height difference | -0.241 km |
| Relative speed | 13.722 km/s |
| Angle between velocity vectors | 133° |
| Geographic position | 73.8°N, 135.0°E |
| Height | 782 km |
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