Mass-radius diagram of planets. Blue circles show the known transiting exoplanets compiled from exoplanet.eu. The orange point represents AU Mic b and the light green horizontal dashed and dotted lines represent the AU Mic c radius measurement and ± 1σ uncertainties. Dark green point represents the median of planets with radius within 1σ of the measured radius of AU Mic c. Dashed orange line shows an iso-density line for the radius and mass of AU Mic b and the olive lines correspond to the iso-densities obtained for the radius of AU Mic c and for the lower limit (dotted), median value (dashed), and upper limit (dot-dashed) of the mass of AU Mic c, based on the exoplanet population with the same radii.