- https://en.wikipedia.org/wiki/Rho_Cassiopeiae
- Rho Cassiopeiae (Wikipedia)
Rho Cassiopeiae is a yellow hypergiant star in the constellation Cassiopeia. Its name is a Bayer designation, pronounced /ˌroʊ kæsiəˈpiːaɪ, -sioʊ-, -iː/. This star is about 8,000 light-years (2,500 pc) distant, yet can still be seen by the naked eye as it is over 300,000 times brighter than the Sun. On average it has an absolute magnitude of −9.5, making it one of the most luminous stars known in visual wavelengths. Its diameter varies between about 300 and 800 times that of the Sun, or 1.4 to 3.7 times the size of Earth’s orbit.