The small icy worlds beyond Neptune provide insights into the early history of the Solar System. The dwarf planets have been thoroughly surveyed in the Northern Hemisphere, but no extensive search has yet been completed in the South. I am using five years of observations at Siding Spring Observatory, and the new SkyMapper survey, to look for the largest and brightest of these trans-Neptunian objects. I work with Brian Schmidt and Paul Francis at RSAA and with Mike Brown at Caltech; here Mike discusses our work.
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