Plot of black body fit parameters. Top panel: Pseudo-bolometric light curve for SN 2017hcc, constructed from the UVW2, UVM2, UVW1, and UBgcVroizJHKs bands. In construction of the pseudo-bolometric light curve, we removed points obtained from Autophot with S/N < 10. Middle panel: Corresponding temperature evolution of the black body. Bottom panel: Corresponding evolution of the black body radius. The cyan triangles and brown diamonds represent the black body fits shown in Fig. 6.