| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35462 | 31054 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 21:54 | 2024 Dec 22 13:40 |
| Time of closest approach (UTC) | 2024 Dec 28 19:15:27.706 |
| Minimum distance | 3.332 km |
| Height difference | 3.331 km |
| Relative speed | 14.585 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 66.5°N, 165.0°W |
| Height | 859 km |
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