Detection of the Q2R ring in the Gemini and CFHT light curves. The data points are plotted in black, and the red lines are the square box model fits derived from the quantities listed in Table E.1. An arbitrary offset was applied in the vertical direction for clarity. The time axis is relative to August 9, 2022 at 06:34:49.26 UTC, the time of the closest approach of Mauna Kea to Quaoar’s shadow center.