Spatial distribution of the 47 galaxies populating the redshift peak at z ∼ 0.06 (red symbols). The galaxies highlighted by red circles are assigned to the eastern clump by 2D–DEDICA, while red stars put in evidence galaxies belonging to the group MSPM 02299 (see text). Black points are the 143 members of A1213, whose BCG is indicated by a black cross. A circle with a radius of 21′ (∼R₂₀₀) is also drawn.