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Mu Ursae Majoris , formally named Tania Australis /ˈteɪniə ɔːˈstreɪlɪs/, is a binary star in the constellation of Ursa Major. An apparent visual magnitude of +3.06 places it among the brighter members of the constellation. Parallax measurements give an estimated distance of roughly 230 light-years from the Sun, with a margin of error of 4%.
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