Residuals of the DR2 and the Earth-based astrometry for (445) Edna corresponding to the maximum-likelihood MCMC solution, computed using a combination of the DR2 and the Earth-based astrometry, as a function of modified Julian date. The black data points represent the Earth-based astrometry, the red data points represent the DR2 astrometry, and the blue and yellow circles respectively represent the Earth-based and the DR2 astrometry rejected as outliers. Several data points are not visible due to the scale chosen for the y axis. Consequently, some outlier observations in particular may only be visible in one of the two coordinates.