| Primary satellite | Secondary satellite |
| Name | IRIDIUM 47 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 40254 | 35089 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 01:45 | 2024 Dec 20 18:19 |
| Time of closest approach (UTC) | 2024 Dec 29 01:43:41.681 |
| Minimum distance | 3.893 km |
| Height difference | 3.747 km |
| Relative speed | 10.947 km/s |
| Angle between velocity vectors | 95° |
| Geographic position | 80.9°S, 35.3°W |
| Height | 853 km |
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