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Epsilon Sagittarii , formally named Kaus Australis /ˈkɔːs ɔːˈstreɪlɪs/, is a binary star system in the southern zodiac constellation of Sagittarius. The apparent visual magnitude of +1.85 makes it the brightest object in Sagittarius. Based upon parallax measurements, this star is around 143 light-years from the Sun.
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