| Primary satellite | Secondary satellite |
| Name | IRIDIUM 118 | SHIYUAN 3 (SY-3) |
| Spacetrack catalog number | 42807 | 33433 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 23:30 | 2024 Dec 23 02:19 |
| Time of closest approach (UTC) | 2024 Dec 28 21:19:25.070 |
| Minimum distance | 3.837 km |
| Height difference | 2.382 km |
| Relative speed | 14.778 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 69.3°S, 10.9°W |
| Height | 805 km |
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