| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 35789 | 30040 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 23 01:11 |
| Time of closest approach (UTC) | 2024 Dec 25 13:31:35.590 |
| Minimum distance | 3.672 km |
| Height difference | -0.479 km |
| Relative speed | 14.870 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 26.3°N, 85.1°E |
| Height | 791 km |
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