SDSS measurements of the alignments of the major axis of the central galaxies with the location of the satellite galaxies (φ_sat) and of the major axis of the central galaxies with the major axis of the group to which they belong, measured with the member galaxies (φ_ch). The upper panels show the total sample and its dependence on mass, while the lower panels show those corresponding to different environments of the cosmic web. In all panels, error bars represent the standard deviation of the mean.