| Primary satellite | Secondary satellite |
| Name | YUNHAI 1-04 | IRIDIUM 166 |
| Spacetrack catalog number | 58073 | 43570 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 08:59 | 2024 Dec 22 21:23 |
| Time of closest approach (UTC) | 2024 Dec 29 07:49:18.499 |
| Minimum distance | 4.856 km |
| Height difference | -4.627 km |
| Relative speed | 12.060 km/s |
| Angle between velocity vectors | 108° |
| Geographic position | 81.4°N, 89.3°E |
| Height | 795 km |
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