Same as Fig. 6 but for the phase space of the central–satellite distance and the radial velocity of three bins in halo mass. We only include satellites with r > r_min fit. The measurements from the mock DESI catalogues are shown in black in the projected histograms, while the shaded regions mark our posterior predictive distributions. There is no difference between mass bins in DESI-SAM. For the highest-mass bin in the DESI-TNG sample, the satellite density profile closely follows the distribution of randomly selected particles. This is not the case for velocities.