| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | ASTEX 1 |
| Spacetrack catalog number | 35105 | 5560 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 18 03:42 | 2024 Dec 23 11:53 |
| Time of closest approach (UTC) | 2024 Dec 25 00:47:07.005 |
| Minimum distance | 2.529 km |
| Height difference | 0.972 km |
| Relative speed | 6.594 km/s |
| Angle between velocity vectors | 52° |
| Geographic position | 80.5°N, 99.9°E |
| Height | 727 km |
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