Tags: Star.
RW Cephei is a red hypergiant star in the constellation Cepheus. One of the largest stars known RW Cephei is estimated at 1260-1610 solar radii. RW Cephei which is nearly as large as the orbit of Jupiter is the largest star in the constellation of Cephus dwarfing V354 Cephei and VV Cephei A. RW Cephei is also a semi-regular variable star of type LC. Its surface is subject to pulsations in temperature and luminosity.