Best Multiple Star
Acrux, officially designated Alpha Crucis, is the brightest star in the southern constellation of Crux, commonly known as the Southern Cross. Located approximately 320 light-years from Earth, it appears as a single point of light to the naked eye but is actually a complex multiple star system compos...
Castor, designated Alpha Geminorum, is the second-brightest star system in the constellation of Gemini, located approximately 51 light-years from Earth. Despite its Bayer designation implying it is the brightest, it is fainter than its neighbor Pollux. Astronomically, Castor is a complex system comp...
Alnitak is a multiple star system positioned as the easternmost star in Orion's Belt. The system is dominated by Alnitak Aa, a hot, blue O-type supergiant, and includes at least two smaller companion stars. It is located approximately 800 light-years from Earth and is highly luminous in the night sk...
Mintaka, designated Delta Orionis, is the westernmost star in Orion's Belt and is situated almost directly on the celestial equator. It is a complex multiple-star system located roughly 1,200 light-years from Earth, with the primary component being a massive, hot blue O-type giant. Mintaka can be id...
Shaula, designated Lambda Scorpii, is the second-brightest star in the constellation Scorpius and marks the tip of the scorpion's tail. The name derives from the Arabic for 'the raised tail.' It is a multiple-star system located approximately 570 light-years from Earth, with the primary component cl...
Almach, designated Gamma Andromedae, is a multiple star system in the constellation Andromeda. Through a small telescope, it appears as a striking double star with a golden-yellow primary and a blue-green companion, making it a popular target for amateur astronomers. The primary component is a K-typ...
Gamma Velorum is a prominent multiple-star system located in the southern constellation of Vela, approximately 1,100 light-years from Earth. The primary component of the system is a spectroscopic binary consisting of a blue O-type giant and the closest and brightest Wolf-Rayet star known to Earth. T...
Zeta Persei, written ζ Persei in astronomical notation, is a blue supergiant star in the constellation Perseus. It is associated with the young Perseus OB1 stellar association and is visible to the unaided eye from sufficiently dark skies; its high luminosity and massive-star evolution distinguish i...
