'''RW Cephei''' (Rw Cep, HD 21246, HIP 110504) is a [[Supergiant|supergiant star]] in the [[constellation]] of [[Cepheus]].<ref name=universeguide/> It is not part of the constellation itself, but does lie within the borders of Cepheus. The star is one of the largest stars known with a radius nearly 1,600 greater than the [[Sun]]'s.<ref name=space.com>{{cite web|url=https://www.space.com/41290-biggest-star.html|title=What Is the Biggest Star?|accessdate=June 22, 2020|publisher=space.com|author=Nola Taylor Redd|date=July 26, 2018}}</ref> The star is sufficiently bright that it does not require [[binocular]]s or a [[telescope]] to observe it. | '''RW Cephei''' (Rw Cep, HD 21246, HIP 110504) is a [[Supergiant|supergiant star]] in the [[constellation]] of [[Cepheus]].<ref name=universeguide/> It is not part of the constellation itself, but does lie within the borders of Cepheus. The star is one of the largest stars known with a radius nearly 1,600 greater than the [[Sun]]'s.<ref name=space.com>{{cite web|url=https://www.space.com/41290-biggest-star.html|title=What Is the Biggest Star?|accessdate=June 22, 2020|publisher=space.com|author=Nola Taylor Redd|date=July 26, 2018}}</ref> The star is sufficiently bright that it does not require [[binocular]]s or a [[telescope]] to observe it. |