Regulus

LEO LIMON [8-10 / 0º-30º], one of the constellations in the "One Size Fits All" (1975) "universe", has a star named "Regulus".

While the name Regulus was given us by Copernicus, Regulus, as a diminutive of the earlier Rex, the star was better known in antiquity as Cor Leonis, the Lion's Heart. This is one of the four key stars in the heavens, also called archangel stars; Regulus was the "Watcher of the North".

Could also be a reference to the Navy's first nuclear armed cruise missile SSM-N-8A 1955-1966.