| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33842 | 30809 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:43 | 2024 Dec 23 04:02 |
| Time of closest approach (UTC) | 2024 Dec 26 18:29:13.004 |
| Minimum distance | 3.395 km |
| Height difference | -1.612 km |
| Relative speed | 8.729 km/s |
| Angle between velocity vectors | 71° |
| Geographic position | 68.1°N, 87.7°W |
| Height | 782 km |
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