Delay-Doppler image collages for the two overall best-fitting models. Contrast of delay-Doppler images has been increased for clarity. The left column is ecliptic longitude, ecliptic latitude (150°, −10°) and a volume-equivalent diameter of ∼7 km; the right column is ecliptic longitude, ecliptic latitude (187°, −53°) and a volume-equivalent diameter of ∼5 km. For each collage, the leftmost panel is the observed delay-Doppler image, the middle panel is the model delay-Doppler image, and the rightmost panel is the multifaceted model, where the purple shaft is the spin axis and the red and green shafts are the principal axes. The black pixels covering the primary’s signal in the delay-Doppler observation and model panels are a pixel mask covering the secondary. The observations were made on 2017 January 23 at 150 m × 0.95 Hz resolution. Note that the original radar data had different frequency and delay resolutions, but all images have been stretched (along both axes) and cropped so that they are displayed as square frames with a side length corresponding to 9 km. This means that the original delay-Doppler pixels can appear rectangular here.