Brown and his team also had been observing the dwarf planet Haumea for approximately six months before its announced discovery by José Luis Ortiz Moreno and colleagues from the Sierra Nevada Observatory in Spain.
Brown a jeho tím pozorovali taktiež trpasličiu planétu Haumea, a to už asi 6 mesiacov pred tým, ako jej objav oznámil iný astronóm, Španiel José-Luis Ortiz Moreno z Observatória Sierra Nevada.