| Primary satellite | Secondary satellite |
| Name | IRIDIUM 138 | FENGYUN 1C DEB |
| Spacetrack catalog number | 43071 | 35175 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:13 | 2024 Dec 19 07:46 |
| Time of closest approach (UTC) | 2024 Dec 24 10:32:44.380 |
| Minimum distance | 3.788 km |
| Height difference | 3.697 km |
| Relative speed | 14.903 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 42.7°S, 67.7°W |
| Height | 795 km |
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