| In astronomy, the color temperature is defined by the local slope of the SPD at a given wavelength, or, in practice, a wavelength range | The Russet color is a reddish-black colo• Vega , the stellar color temperature is given by the temperature for which the color index of a black-body |
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| Given, for example, the color magnitudes B and V which are calibrated to be equal for an A0V star e |