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Which spectral class does a star fit into if it has a surface temperature of 20,000 K?

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2 answers

  1. Probably a B start. I've copied the table. See below.
    Temperature
    O 30,000 - 60,000 K Blue stars
    B 10,000 - 30,000 K Blue-white stars
    A 7,500 - 10,000 K White stars
    F 6,000 - 7,500 K Yellow-white stars
    G 5,000 - 6,000 K Yellow stars (like the Sun)
    K 3,500 - 5,000K Yellow-orange stars
    M < 3,500 K Red stars

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  2. B

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