The normalized residuals of the best parameter set from our HST-only (nonrobust) orbit fit. x and y correspond to ecliptic longitude and latitude, which is the primary coordinate system used in MultiMoon. Hi’iaka residuals are shown as circles and Namaka with triangles. The color of each point corresponds to the observation date. The circles correspond to 1, 2, and 3σ error contours. As reported in the text, this fit corresponded to a reduced χ ² ∼ 1.10. We find that although the fit quality is worse than would be desired, the p-value associated with the χ ² statistic is 0.23, indicating an acceptable fit.