Pseudo-bolometric properties. Top panel: pseudo-bolometric light curve of AT 2022fnm. Second panel: temperature versus time of a black body that has been fitted to the pseudo-bolometric light curve. Third panel: log of the radius versus time of a black body that has been fitted to the pseudo-bolometric light curve. Bottom panel: expansion velocity (radius over time) versus time of a black body that has been fitted to the pseudo-bolometric light curve. Note that the radius is simply being divided by the elapsed time at each point to generate this crude measure. The data have been corrected for redshift and foreground extinction. Points corresponding to the SED fits from Fig. 8 have been overplotted for comparison in the form of red triangles. The figure has been truncated at +80 d as the light curve is dominated by numerical artefacts beyond this epoch.