| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35462 | 32129 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 21:54 | 2024 Dec 22 06:12 |
| Time of closest approach (UTC) | 2024 Dec 25 08:52:50.941 |
| Minimum distance | 4.825 km |
| Height difference | -2.135 km |
| Relative speed | 10.317 km/s |
| Angle between velocity vectors | 88° |
| Geographic position | 71.4°N, 81.8°E |
| Height | 874 km |
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