Rasalgethi, Alpha 1 Herculis, 64 Herculis
|The brightest star in
Hercules has an Arabic name meaning 'head of the kneeling man'. The primary in this
distant and complex system is a very massive red giant,
but orbiting this is a closer double
star that shines with a yellow-green light.
eSky © copyright Mark Fisher 1999-2013