| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33905 | 37430 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 18:00 | 2024 Dec 20 10:36 |
| Time of closest approach (UTC) | 2024 Dec 27 23:32:48.635 |
| Minimum distance | 4.472 km |
| Height difference | -3.857 km |
| Relative speed | 14.808 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 41.2°N, 167.5°E |
| Height | 827 km |
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