The star alpha leonis, Regulus, is the most prominent star in Leo, shining at magnitude +1.36 which makes it the 21st brightest star. The name literally means 'king' and comes from the latin 'rex'. Regulus lies at a distance of 69 light-years and has an absolute magnitude of -0.7, and a surface temperature of 13,000K. The star has a +7.7 dwarf companion (also a double star), 177 arcseconds away. Regulus is one of the brightest stars that can be occulted by our solar system planets. Our Moon also occults the star over two `periods` of 18 months during it`s 18.6 metonic cycle.