| Primary satellite | Secondary satellite |
| Name | IRIDIUM 138 | FENGYUN 1C DEB |
| Spacetrack catalog number | 43071 | 36232 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:13 | 2024 Dec 20 16:32 |
| Time of closest approach (UTC) | 2024 Dec 24 05:13:44.715 |
| Minimum distance | 3.599 km |
| Height difference | -0.356 km |
| Relative speed | 14.710 km/s |
| Angle between velocity vectors | 160° |
| Geographic position | 74.1°S, 151.6°W |
| Height | 806 km |
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