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The Great Bear, a circumpolar constellation for observers at mid-northern latitudes or higher latitudes (see ...


= Encyclopedia Article; = Research Update
Modern boundaries of the constellation Ursa Major, the Great Bear. The celestial equator is 0° of declination, which corresponds to celestial latitude. Right ascension corresponds to celestial longitude, with each hour of right ascension representing 15° of arc. Apparent brightness of stars is shown with dot sizes to illustrate the magnitude scale, where the brightest stars in the sky are 0th magnitude or brighter and the faintest stars that can be seen with the unaided eye at a dark site are 6th magnitude. (Wil Tirion)
From Encyclopedia article 'Ursa Major'
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