Tags: Star.

Eta Ursae Majoris (Eta UMa η Ursae Majoris η UMa) is a star in the constellation Ursa Major. It has the traditional names Alkaid (or Elkeid) and Benetnash (Benetnasch). Alkaid is the most eastern (leftmost) star in the Big Dipper (Plough) asterism. However unlike most stars of the Big Dipper it is not a member of the Ursa Major moving group.

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