| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | FENGYUN 1C DEB |
| Spacetrack catalog number | 12172 | 37464 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 00:38 | 2024 Dec 18 05:34 |
| Time of closest approach (UTC) | 2024 Dec 26 10:48:09.721 |
| Minimum distance | 4.427 km |
| Height difference | -4.371 km |
| Relative speed | 14.757 km/s |
| Angle between velocity vectors | 155° |
| Geographic position | 32.1°N, 116.2°E |
| Height | 771 km |
|