Remote Sensing

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    Tony Aguirre
    Participant

    The O.B.A.F.G.K.M. classification

    Astronomers commonly refer to stars by their spectral type in a scheme that arose from this project:

    O 28,000 K – 50,000 K.
    B 10,000 K – 28,000 K.
    A 7,500 K – 10,000 K.
    F 6,000 K – 7,500 K.
    G 5,000 K – 6,000 K.
    K 3,500 K – 5,000 K.
    M 2,500 K – 3,500 K.

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