Alpha Doradus
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Alpha Doradus is the brightest star in the constellation of Dorado. It is actually a binary system of two stars, and has an overall apparent visual magnitude which varies between 3.26 and 3.30. The binary star consists of a subgiant with spectral type B revolving around a giant star with spectral type A in an eccentric orbit with a period of about 12 years. The orbital separation varies from 2 astronomical units at periastron to 17.5 astronomical units at apastron.…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Alpha Doradus is the brightest star in the constellation of Dorado. It is actually a binary system of two stars, and has an overall apparent visual magnitude which varies between 3.26 and 3.30. The binary star consists of a subgiant with spectral type B revolving around a giant star with spectral type A in an eccentric orbit with a period of about 12 years. The orbital separation varies from 2 astronomical units at periastron to 17.5 astronomical units at apastron. The primary, Doradus A, is a chemically peculiar star whose atmosphere has a high concentration of silicon.