| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Delta 139 |
| Spacetrack catalog number | 31503 | 12209 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 06:29 | 2024 Dec 22 23:26 |
| Time of closest approach (UTC) | 2024 Dec 26 09:27:16.446 |
| Minimum distance | 3.059 km |
| Height difference | -3.059 km |
| Relative speed | 14.266 km/s |
| Angle between velocity vectors | 146° |
| Geographic position | 56.0°N, 128.7°E |
| Height | 808 km |
|