Alcor

alphecca star, alpha coronae borealis

Alphecca

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Alphecca, Alpha Coronae Borealis (α CrB), is the brightest star in the constellation Corona Borealis, the Northern Crown. Also known as Gemma, Alpha CrB is… Read More »Alphecca

beta orionis

Rigel

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Rigel, Beta Orionis (β Ori), is a blue-white supergiant star located in the constellation Orion, the Hunter. With an apparent magnitude of 0.13, it is… Read More »Rigel

80 ursae majoris

Alcor

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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

zeta ursae majoris

Mizar

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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

gamma ursae majoris

Phecda

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Phecda, Gamma Ursae Majoris (γ UMa), sometimes also known as Phad, is one of the bright stars forming the Big Dipper‘s bowl and the Great… Read More »Phecda