| Primary satellite | Secondary satellite |
| Name | CAS-4B | FENGYUN 1C DEB |
| Spacetrack catalog number | 42759 | 31920 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:32 | 2024 Dec 22 20:24 |
| Time of closest approach (UTC) | 2024 Dec 27 20:39:41.514 |
| Minimum distance | 3.407 km |
| Height difference | 2.915 km |
| Relative speed | 12.825 km/s |
| Angle between velocity vectors | 114° |
| Geographic position | 41.7°N, 97.0°W |
| Height | 448 km |
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