| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Delta 139 |
| Spacetrack catalog number | 31452 | 12237 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 19 16:57 | 2024 Dec 22 05:19 |
| Time of closest approach (UTC) | 2024 Dec 28 13:33:13.742 |
| Minimum distance | 2.263 km |
| Height difference | -1.708 km |
| Relative speed | 11.860 km/s |
| Angle between velocity vectors | 105° |
| Geographic position | 75.7°N, 18.4°E |
| Height | 831 km |
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