The Shape and Surface Variation of 2 Pallas from the Hubble Space Telescope, Science (subscription required) “Fig. 1 Deconvolved 336-nm WFPC2 images of Pallas from 8 September 2007. We observed Pallas at an angular size of 0.326 arc sec and a phase of 4.2, resulting in a scale of ~75 km/pixel. Pallas’ spin pole (pointing upward) and south pole () are marked, and the corresponding sub-Earth longitude is labeled; north […]