stellar classification is the classification of stars based on their spectral characteristics
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Stellar classification is based on the analysis of light from
stars. The temperature from the photosphere of the star effects the
amount and types of ions and this is used classifying the star.
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It is a star that has entered the super-giant phase. Its stellar
classification is K2 1b.
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== == No our Sun is a G2V star. See related link for more
information on stellar classification
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It isn't. Unless they're interested in knowing something about
the world beyond our Earth.