| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Delta 139 |
| Spacetrack catalog number | 31766 | 12262 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 05:40 | 2024 Dec 22 21:50 |
| Time of closest approach (UTC) | 2024 Dec 25 22:41:20.379 |
| Minimum distance | 2.819 km |
| Height difference | 2.754 km |
| Relative speed | 13.044 km/s |
| Angle between velocity vectors | 124° |
| Geographic position | 70.7°N, 98.7°W |
| Height | 918 km |
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