Period–radius diagram of the confirmed transiting extrasolar planets (exoplanet.eu, Schneider et al. 2011, accessed 4.5.2019) and brown dwarfs (collected from Carmichael et al. 2019; Persson et al. 2019; Jackman et al. 2019) to date with periods between 0.3 and 200 days and radii between 0 and 2 R_Jup. TOI 263.01 is marked with a black-edged white star with 68 and 99% central posterior intervals for its true radius marked with dark and light orange shading, respectively. Planets around host stars with T_Eff < 4000 K are marked with orange-edged stars, and the distribution of planets around hotter stars is shown with blue shading. Brown dwarfs around host stars with T_Eff < 4000 K are marked with orange-edged circles, and the brown dwarfs around hotter hosts are marked with dark-blue-edged circles. The numbered planets and brown dwarfs are described in Sect. 6.