| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Delta 139 |
| Spacetrack catalog number | 31018 | 12290 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:51 | 2024 Dec 22 20:59 |
| Time of closest approach (UTC) | 2024 Dec 26 15:27:02.778 |
| Minimum distance | 4.333 km |
| Height difference | -2.510 km |
| Relative speed | 10.800 km/s |
| Angle between velocity vectors | 93° |
| Geographic position | 76.9°N, 26.7°W |
| Height | 838 km |
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