| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33842 | 29790 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:43 | 2024 Dec 23 12:03 |
| Time of closest approach (UTC) | 2024 Dec 28 11:49:42.041 |
| Minimum distance | 3.637 km |
| Height difference | 3.366 km |
| Relative speed | 14.962 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 39.2°N, 114.1°W |
| Height | 742 km |
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