Fig. 4: Residuals of the astrometric data to Haumea's orbit versus the angular separation of Hi'iaka with, respect to Haumea obtained from the Miriade service.
From: Accurate geometric albedo, shape, and size of Hi’iaka from a stellar occultation

Each point corresponds to the median of the residuals, obtained per night per telescope. The line depicts a linear fit to the data points.