Ludwig’s Star

Alcor

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80 ursae majoris

Alcor is a double star in the constellation Ursa Major. It is the naked-eye companion to Mizar, the middle star in the handle of the… Read More »Alcor

Mizar

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zeta ursae majoris

Mizar, Zeta Ursae Majoris (ζ UMa), is a quadruple star system in Ursa Major. It has a combined apparent magnitude of 2.04 and lies at… Read More »Mizar