The name Regulus also known as Cor Leonis means Heart of the Lion. Found by astronomer Nicolaus Copernicus, Regulus lies on the main sequence of stellar evolution and is the brightest star within the Alpha Leo constellation. It's the 21st brightest out of the stars visible from earth with a magnitude of 1.35 and is 50 million years old.
Compared to the sun the star's size is 5 times greater, much hotter burning at 12000K, and completes its rotation in 15.9 hours; also, it's 77 light years away from the earth. The oblate shape caused by rapid rotation creates a higher surface gravity on the north and south poles than the equatorial region. Higher surface gravity means a higher temperature and brightness.