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Alioth

Epsilon Ursae Majoris, 77 Ursae Majoris

Despite its 'epsilon' designation, Alioth is the brightest star in Ursa Major, with a magnitude of +1.8. This white star exhibits variability of the type demonstrated by Cor Caroli (or Alpha2 Canum Venaticorum): that is, Alioth's apparent brightness changes as the star rotates.

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