| Primary satellite | Secondary satellite |
| Name | IRIDIUM 138 | FENGYUN 1C DEB |
| Spacetrack catalog number | 43071 | 30295 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:13 | 2024 Dec 22 13:12 |
| Time of closest approach (UTC) | 2024 Dec 29 15:07:35.094 |
| Minimum distance | 4.711 km |
| Height difference | 0.049 km |
| Relative speed | 14.558 km/s |
| Angle between velocity vectors | 154° |
| Geographic position | 77.6°N, 23.1°E |
| Height | 790 km |
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