| Primary satellite | Secondary satellite |
| Name | IRIDIUM 100 | FENGYUN 1C DEB |
| Spacetrack catalog number | 42956 | 29760 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:38 | 2024 Dec 22 23:34 |
| Time of closest approach (UTC) | 2024 Dec 29 21:26:18.019 |
| Minimum distance | 4.466 km |
| Height difference | -2.219 km |
| Relative speed | 13.151 km/s |
| Angle between velocity vectors | 123° |
| Geographic position | 81.2°N, 148.2°W |
| Height | 790 km |
|