Regulus

The brightest star in Leo its Latin name means “the little king,” the reference to a royal star going back to ancient times. Regulus marks the bottom of the Sickle that outlines the Lion's head. It is a trinary system, the chief component of which is a young, fast-spinning B star. This is orbited by a lighter-weight companion about 4,200 AU away with a period of at least 130,000 years. The companion is itself a double separated by at least 100 AU and with an orbital period of about 2,000 years. Both stars are less massive and dimmer than the Sun. The brighter star is an orange dwarf, while the fainter is a red (class M) dwarf.