Position-velocity diagram for the dwarf galaxy satellite system of Cen A. The x-axis represents the distance from the minor axis (i.e., along the major axis) derived from the satellite distribution. The filled circles show the dwarf galaxies used in Müller et al. (2018b), and the stars illustrate the new data. The uncertainties are always plotted, but often smaller than the dots. Approaching and receding galaxies with respect to the mean of the group are shown in blue and red, respectively, as in Fig. 1.