Tau Ursae Majoris, Russian Arctic National Park
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Tau Ursae Majoris is the Bayer designation for a binary star in the northern circumpolar constellation of Ursa Major. It is visible to the naked eye, having an apparent visual magnitude of 4.66. With an annual parallax shift of 25.82 mas, it is located about 126 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.19 due to interstellar dust. ()
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Russian Arctic National Park
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Arkhangelsk