Residuals in AL and AC for Gaia Charon data. Different symbols and colors mark 27 Gaia transits of the object. Red, blue, cyan, magenta, and black color represent transits from 2014, 2015, 2017, 2018, and 2019. Vertical blue lines mark the 1σ of the AL residuals. (A) and (B) show residuals without albedo or planetary ephemeris biases applied. Distribution of AL residuals (232 measurements) is compared to a probability density function (PDF) for a normal distribution with zero mean (in red). (C) and (D) show the residuals for the fit with the albedo model from Buratti et al. (2017). (E) and (F) show the residuals for the fit with the corrected planetary ephemeris.