Left panel: PDF of μ₁ = cos θ₁, the angle between the minor axis of the central galaxy and the vector separating it from its satellites, at 0.3 < z < 0.8 and for different colour bins. Right panel: PDF of μ = cos θ, the angle between the spin of the central galaxy and the satellite separation vector. For massive red central galaxies, the satellites tend to be distributed on the galactic plane. The amplitude of the signal is stronger when using the minor axis rather than the spin.