| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 33841 | 30942 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 16:25 | 2024 Dec 22 12:09 |
| Time of closest approach (UTC) | 2024 Dec 26 10:51:04.663 |
| Minimum distance | 4.827 km |
| Height difference | -4.128 km |
| Relative speed | 14.713 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 66.9°N, 84.3°E |
| Height | 780 km |
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