S Doradus is a blue hypergiant star found in the large magellanic cloud. Its temperature can fall to lower than 7,000 degrees Kelvin in big eruptions. S Doradus can be more than a million times brighter than our Sun and 380 times larger in these eruptions.
- Lamers, H. J. G. L. M. (15 February 1995). "Observations and Interpretation of Luminous Blue Variables". p. 176 – via NASA ADS.