| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 39586 | 35122 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 02:55 | 2024 Dec 20 12:05 |
| Time of closest approach (UTC) | 2024 Dec 26 09:34:26.408 |
| Minimum distance | 3.829 km |
| Height difference | -3.784 km |
| Relative speed | 12.624 km/s |
| Angle between velocity vectors | 116° |
| Geographic position | 74.0°N, 3.2°W |
| Height | 846 km |
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