| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | IRIDIUM 146 |
| Spacetrack catalog number | 30634 | 43254 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 21:49 | 2024 Dec 22 20:08 |
| Time of closest approach (UTC) | 2024 Dec 29 05:28:39.864 |
| Minimum distance | 3.805 km |
| Height difference | -3.478 km |
| Relative speed | 14.940 km/s |
| Angle between velocity vectors | 174° |
| Geographic position | 25.5°S, 155.4°E |
| Height | 791 km |
|