Sketch of orientations. The separations are not to scale. The blue solid line refers to the position angle of the axis from GG Tau Aa to Ab1 and Ab2. The pink dashed line refers tothe major axis of the inclined CB disk. The position angles are celestial positive (N → E). Due to the inclination, the northern region of the disk is oriented toward the observer. The orientation of the Ab1 and Ab2 binary corresponds to its discovery in 2012.