| Primary satellite | Secondary satellite |
| Name | NOAA 18 | FENGYUN 1C DEB |
| Spacetrack catalog number | 28654 | 29751 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Dec 12 23:35 | 2025 Dec 12 00:49 |
| Time of closest approach (UTC) | 2025 Aug 07 11:51:24.548 |
| Minimum distance | 278.047 km |
| Height difference | 0.080 km |
| Relative speed | 5.894 km/s |
| Angle between velocity vectors | 47° |
| Geographic position | 80.1°S, 133.6°W |
| Height | 869 km |
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