Satellite galaxies in the TNG50 Fornax-type cluster. Top and Middle panels: Satellite stellar masses and moving average (calculated with Eq. (17)) shown as a function of their cluster-centric distances and colour-coded by their stellar mass densities. In the middle panel, we masked out satellites with $M_{2h\star }^{\star }>{10}^9{\mathrm{M}}_{\odot }$. Bottom panel: Central mean stellar mass densities of the satellites and the moving average as a function of their distances shown for satellites with stellar masses within $M_{2h\star }^{\star }\le {10}^9{\mathrm{M}}_{\odot }$. The transition radius ℜ_⋆ is also plotted (vertical blue line), indicating that within ℜ_⋆ the mean stellar mass densities still increase despite the removal of massive satellite. The cluster tidal field is also shown (τ). Histograms are plotted in the right sub-panels to show their distributions.