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119 Tauri

119 or CE Tauri, also known as ruby star, is a red supergiant and one of the reddest naked eye stars. Its physical values are quite uncertain, as often with this kind of stars. The star pulsates with a semiregular period of 165 days and thereby changes its luminosity for 0.3 mag.

Constellation: Taurus
Distance: 1920 light-years
Spectral class: M2
Visual magnitude: 4.37
Luminosity: circa 50 000 * Sun
Mass: 12 - 15 * Sun
Diameter: circa 600 * Sun

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08/13/2008

    Ruby star 119 Tauri
Photo: Sloan Digital Sky Survey

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