A complete MK designation includes both spectral type and luminosity class -for instance, the sun is a G2V.

一个完整的MK系统代号包含光谱类型和光度型两部分——例如，太阳属于G 2 V类恒星。

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A complete MK designation includes both spectral type and luminosity class -for instance, the sun is a G2V.

一个完整的MK系统代号包含光谱类型和光度型两部分——例如，太阳属于G 2 V类恒星。

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