Mean stellar mass densities (${\overline{\rho }}_{2h\star }^{\star }$) of 492 satellite galaxies (circles) as a function of their projected distances to their hosting TNG50 Fornax-type cluster, with colours indicating their stellar masses. The deprojected profile is shown in Fig. 2 (bottom panel). The host tidal field profile (|τ|) is shown with the purple curve. The blue curve shows the moving average profile using Eq. (17). The measurement of the transition radius (ℜ_⋆) is performed using the projected profile R_proj (vertical dot-dash line). The histogram in the right sub-panel shows the shape of the satellite mass density distribution.