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Arctur

Arctur, the giant next to us (a red giant) is one of the brightest stars in the northern hemisphere.

Constellation: Boötes
Age: 1 billion years
Distance: 36.71 light-years
Spectral class: K2
Visual magnitude: -0.05
Luminosity: 215 * Sun
Mass: 3.4 * Sun
Diameter: 31.45 * Sun

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Photo: Esa
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