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Hyadum I

The orange-red subgiant Hyadum I or Gamma Tauri is the brightest and most heavy star in the open star cluster of the Hyades. The approximately 350 stars of the cluster emerged all at the same time and move to the same direction.

Constellation: Taurus
Age: 650 million years
Distance: 150 light-years
Spectral class: K0
Visual magnitude: 3.65
Luminosity: 80 * Sun
Mass: 3 * Sun
Diameter: 12 * Sun

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    The Hyades
The Hyades, Hyadum I is at the lower right, the peak of the V.
The brightest star, Aldebaran, doesn't belong to the Hyades.
Photo: ESO

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