Polaris

'''Polaris, the North Star or Pole Star, is the brightest star of the constellation Ursa Minor. It is very close to the north celestial pole, making it the current northern pole star. Polaris is a triple star system, composed of the primary star, Polaris Aa (a yellow supergiant), in orbit with a smaller companion (Polaris Ab); the pair in orbit with Polaris B (discovered in August 1779 by William Herschel).'''