Arcturus
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Arcturus is the brightest star in the constellation Boötes. To the naked eye, orangey-yellow Arcturus has a visual magnitude of 0.04, making it the brightest star in the northern hemisphere and the fourth brightest star in the night sky, after 1.46 magnitude Sirius, 0.86 magnitude Canopus and 0.27 magnitude Alpha Centauri. However, Alpha Centauri is a bright binary star, whose unresolved components to the naked eye are both fainter than Arcturus. This makes Arcturus…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. Arcturus is the brightest star in the constellation Boötes. To the naked eye, orangey-yellow Arcturus has a visual magnitude of 0.04, making it the brightest star in the northern hemisphere and the fourth brightest star in the night sky, after 1.46 magnitude Sirius, 0.86 magnitude Canopus and 0.27 magnitude Alpha Centauri. However, Alpha Centauri is a bright binary star, whose unresolved components to the naked eye are both fainter than Arcturus. This makes Arcturus the third brightest individual star, just ahead of Alpha Centauri A, whose visual magnitude is 0.01.