| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | IRIDIUM 173 |
| Spacetrack catalog number | 35105 | 43925 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 18 03:42 | 2024 Dec 23 03:09 |
| Time of closest approach (UTC) | 2024 Dec 25 03:15:51.809 |
| Minimum distance | 4.575 km |
| Height difference | -4.435 km |
| Relative speed | 11.331 km/s |
| Angle between velocity vectors | 99° |
| Geographic position | 80.9°S, 81.3°W |
| Height | 812 km |
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