Pollux (Beta Geminorum; b Gem)
The brightest star in the constellation Gemini. It was nevertheless given the Bayer letter Beta rather than Alpha. It seems unlikely that Pollux has brightened since Bayer's time (1572-1625). Pollux is an orange-coloured, giant K star. Castor and Pollux were the twin sons of Leda in classical mythology.

See also: Table 3.