Scaling relations of all Virgo cluster objects (see text). Dashed lines: detection limit of μ_e,V = 26.5 mag/arcsec², solid lines: linear fit to all datapoints with M_V < −14 mag in the r − M diagram (in μ − M diagram: −18 < M_V < −13 mag), dotted black line: 2σ confidence interval, dotted red line: completeness limit of M_V = −13.0 mag, filled circles: spectroscopically confirmed Virgo cluster members, filled triangles: remaining objects with VCC index, asterisks: probable Virgo cluster members.