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 the best-known variable stars in the sky and a prototype […]
Multiple Star Systems
Almach
Almach, Gamma Andromedae (γ And), is a quadruple star system located in the constellation Andromeda. With an apparent magnitude of 2.27, it is the third brightest point of light in Andromeda. It is only slightly […]
Bharani
41 Arietis (41 Ari) is a triple star system located in the constellation Aries. The brightest component in the system, 41 Arietis Aa, is formally named Bharani. With an apparent magnitude of 3.63, 41 Arietis […]
Capella
Capella, Alpha Aurigae (α Aur), is a quadruple star system located in the constellation Auriga, the Charioteer. It is the brightest star in Auriga and the sixth brightest star in the sky. With a combined […]
Atlas
Atlas, 27 Tauri (27 Tau), is a multiple star system located in the constellation Taurus. It is one of the brightest members of the Pleiades (Messier 45), one of the brightest and nearest open clusters […]
Alcyone
Alcyone, Eta Tauri (η Tau) is a multiple star system located in the constellation Taurus, the Bull. With an apparent magnitude of 2.87, Alcyone is the third brightest star in Taurus, after Aldebaran and Elnath, […]
Albireo
Albireo, Beta Cygni (β Cyg) is a double star located in the constellation Cygnus. With an apparent magnitude of 2.90, it is the fifth brightest star in Cygnus and the faintest of the stars that […]
Regulus
Regulus, Alpha Leonis (α Leo), is a multiple star system located in the constellation Leo. It lies at a distance of 79.3 light years from Earth. With a combined apparent magnitude of 1.36, it is […]
Mimosa
Mimosa, Beta Crucis (β Cru), is a multiple star system located in the constellation Crux. With an apparent magnitude of 1.25, it is the second brightest star in Crux and the 20th brightest star in […]
Acrux
Acrux, Alpha Crucis (α Cru), is a multiple star system located in the constellation Crux. It is the brightest of the stars that form the Southern Cross, one of the best known asterisms in the […]