What us the color of the star Bellatrix, which has a surface temperature of of approximately 21,000 K?

1 Answer
May 12, 2017

The star Bellatrix with appears bluish-white in color.

Explanation:

Stars act as almost perfect black bodies. Hence their mostly color depends on their surface temperature by following the planckian locus.

https://en.wikipedia.org/wiki/Black-body_radiation#/media/File:PlanckianLocuspng

For a star like Bellatrix with a surface temperature of approx 21,000K, The color is bluish-white.