Evolution of the bolometric luminosity, temperature and radius for PS16dtm, by fitting a blackbody to the Galactic extinction and host-corrected photometry, excluding the photometry in the three NUV UVOT filters and requiring at least 4 photometric measurements in each epoch. The purple line in the upper insert represents the best fit of the fading light curve with a power-law profile, where the power-law index is fit freely, L = L_o(t − t_o)^−α.