Aldebaran is the brightest star in the constellation of Taurus and the 13th brightest in the night sky. Its name comes from the Arabic al dabaran meaning the follower, in reference to its position behind the Pleiades cluster. Aldebaran is a red giant of magnitude 0.86 which has evolved in a similar way to Chi Cygni. Located half way between Earth and the Hyades cluster Aldebaran appears to be part of it by a trick of perspective.
Aldebaran and some of its accompanying stars. Credit P. Wienerroither