| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-249 |
| Spacetrack catalog number | 31071 | 14430 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 08:56 | 2024 Dec 22 10:07 |
| Time of closest approach (UTC) | 2024 Dec 23 21:10:56.792 |
| Minimum distance | 3.225 km |
| Height difference | -3.020 km |
| Relative speed | 13.854 km/s |
| Angle between velocity vectors | 132° |
| Geographic position | 59.5°N, 171.1°W |
| Height | 775 km |
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