Color index

In astronomy, the color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. The lower the color index, the more blue (or hotter) the object is.

Source: Wikipedia — Color index (CC BY-SA 4.0)

Color index

In astronomy, the color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. The lower the color index, the more blue (or hotter) the object is.

Source: Wikipedia "Color index" · CC BY-SA 4.0

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