Alpha Coronae Borealis

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

algol star,beta persei,demon star

Algol

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Algol, Beta Persei (β Per) is a triple star system located in the constellation Perseus. Commonly known as the Demon Star, it is one of… Read More »Algol

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

eta ursae majoris

Alkaid

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Alkaid, Eta Ursae Majoris (η UMa) is a blue main sequence star with an apparent magnitude of 1.86, located at a distance of 103.9 light… Read More »Alkaid

delta ursae majoris

Megrez

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Megrez, Delta Ursae Majoris (δ UMa), is the faintest of the seven stars that form the Big Dipper asterism. It is a third magnitude star… Read More »Megrez

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