Measured absolute R-band magnitudes of 324P in a 2300 km radius aperture plotted as a function of the true anomaly. The different symbols correspond to the different telescopes and instruments, and colors mark the perihelion passages: green for 2010, blue for 2015, and red for 2021. The vertical dashed line indicates perihelion. The horizontal dashed line corresponds to the absolute magnitude of the inactive nucleus (18.4 mag).