| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 34913 | 30677 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 07:23 | 2024 Dec 21 15:12 |
| Time of closest approach (UTC) | 2024 Dec 25 16:05:59.603 |
| Minimum distance | 4.818 km |
| Height difference | -4.630 km |
| Relative speed | 14.561 km/s |
| Angle between velocity vectors | 153° |
| Geographic position | 69.2°N, 80.1°W |
| Height | 776 km |
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