Hercules rises on its side. The 4-star "Keystone," which contains the famed globular cluster M 13, is to the left. Kornephoros is the brightest star, Zeta Herculis number two. Rasalgethi, the Alpha star, marks Hercules' head. Hercules' other bright globular cluster M 92 is not visible to the naked eye. The odd star 89 Herculis lies near Mu in in eastern Hercules. Iota Herculis is off the picture to the left, and is closer to the classic figure of Draco. Hercules also has a star with an orbiting planet. Rho Coronae Borealis has a planet as well.