Rho Ophiuchi

Rho Ophiuchi (ρ Oph) is a multiple star system located at an approximate distance of 360 light years from Earth in the constellation Ophiuchus. The main pair in the system, Rho Ophiuchi AB, has a combined apparent magnitude of 4.63 and, while it is visible to the unaided eye, it is not among the 20 brightest points of light in Ophiuchus. The Rho Ophiuchi system is surrounded by a large region of nebulosity known as the Rho Ophiuchi cloud complex. The nebula is one of the nearest star-forming regions to the Sun.