AB Dor A represented as a gray sphere with its rotation axis plotted in solid green, assuming the rotation axis is perpendicular to the orbital plane of the binary system AB Dor A/C. The dashed lines represent the projection of the rotation axis on the xy plane (plane of the sky) and on the zy plane. In this sketch, the rotation axis is inclined 60° with respect to our line of sight, here represented by the z axis.