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Red hypergiant

Hertzsprung–Russell diagramSpectral typeOBAFGKMLTBrown dwarfsWhite dwarfsRed dwarfsSubdwarfsMain sequence("dwarfs")SubgiantsGiantsRed giantsBlue giantsBright giantsSupergiantsRed supergiantHypergiantsabsolutemagni-tude(MV)A hypergiant (luminosity class0, Ia-0 or Ia) is a very rare type of star that has an extremely high luminosity, mass, size and mass loss because of its extreme stellar winds.

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