| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33841 | 30235 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 16:25 | 2024 Dec 23 00:46 |
| Time of closest approach (UTC) | 2024 Dec 28 22:40:58.516 |
| Minimum distance | 3.899 km |
| Height difference | -2.067 km |
| Relative speed | 14.972 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 37.9°N, 134.6°E |
| Height | 761 km |
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