| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35031 | 37689 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 05:55 | 2024 Dec 19 07:15 |
| Time of closest approach (UTC) | 2024 Dec 27 17:32:56.170 |
| Minimum distance | 1.635 km |
| Height difference | -1.393 km |
| Relative speed | 14.782 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 63.2°N, 141.7°W |
| Height | 771 km |
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