Authors: Bin Zhuang (University of New Hampshire), Yan Xu ( New Jersey Institute of Technology), Haimin Wang( New Jersey Institute of Technology)

In this study, we investigate approximately 20 filament eruptions, associated Earth-orientated CMEs, all of which were geoeffective. The events are categorized into two groups: (1) filament eruptions from Quiet Sun (QS) regions and (2) eruptions of sigmoid-shape filaments in active regions. Our preliminary results indicate a clear difference in rotational behavior between the two groups. QS filament eruptions tend to maintain their original orientation, while sigmoid filaments exhibit strong and sometimes complex rotations, occasionally exceeding 180° while preserving helicity, during the eruptions. We also evaluate the role of CME speed and the background coronal magnetic field structure, including possible interactions with the heliospheric current sheet. This study aims to provide insight into the physical conditions that govern the variation of CME orientations, and therefore contribute to predicting the CME geoeffectiveness.