Natural satellite achieved hydrostatic equilibrium, and Uranus has five. It has been suggested that some satellites may potentially harbour life. Among the identified dwarf planets, Ceres has no known natural satellites. Pluto has the relatively large natural satellite Charon and four smaller natural satellites; Styx, Nix, Kerberos, and Hydra. Haumea has two natural satellites, and Eris and Makemake have one each. The Pluto–Charon system is unusual in that the center of mass lies in open space between the two, a characteristic sometimes associated with a double-planet system. The seven largest natural satellites in the Solar System (those bigger than 2,500 km across)
Sailor Pluto doesn't display any personality traits associated with Scorpios despite being born under the sign; it seems to have been picked solely for its astrological significance. Also, according to Naoko Takeuchi's notes in the various artbooks, she mentions that "Setsuna wears hotpants as well at home, but basically she also likes long skirts" and that she believes "Setsuna should forever wear white clothes". The kanji of Setsuna's surname translates as and . Together, they constitute most of the name of the dwarf planet Pluto in Japanese: . Her given name is in hiragana and so its meaning is not inherent, but