Alkaid (Eta Ursae Majoris)
Alkaid, Eta Ursae Majoris (η UMa), is a blue main sequence star with an apparent magnitude of 1.86. It lies at a distance of 103.9… Read More »Alkaid (Eta Ursae Majoris)
Alpha Coronae Borealis
Alioth (Epsilon Ursae Majoris)
Alioth, Epsilon Ursae Majoris (ε UMa), is the brightest star in the constellation Ursa Major (the Great Bear). It has an apparent magnitude of 1.77 and… Read More »Alioth (Epsilon Ursae Majoris)
Sirius
Sirius, Alpha Canis Majoris (α CMa), is the brightest star in the night sky and one of the nearest star systems to Earth. The blue-white… Read More »Sirius
Alphecca
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
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
Alcor
Alcor is a double star in the constellation Ursa Major. It is the fainter companion to Mizar, the middle star in the handle of the… Read More »Alcor
Mizar
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