Rho Cassiopeiae
- Type
- Star System
- Diameter
- 274,935,168 to 424,074,528 miles
- Distance
- 1,050 light years
- Temperature
- 7,768 to 10,419 °F
- Star Type
- G2Iae - Yellow Hypergiant
- Date of Discovery
- 1603 (catalogued) (Johann Bayer)
- Other Names
- 7 Cassiopeiae, HR 9045, HD 224014
- Rho Cassiopeiae is a yellow hypergiant star, moving through the final stages of its existence, now converting helium into other elements. The start is one of the brightest yellow stars we know about.
- In the Comparison picture, the the yellow star is Rho Cassiopeiae, the grey circle the Earth's orbit, the red circle is Jupiter's orbit, and the blue circle is Neptune's orbit.
- Draw a comparison of the Sun and Rho Cassiopeiae.
- Located in
- Cassiopeia, Milky Way
- Its diameter has been difficult to establish, with a big variation in possible minimum and maximum sizes.
- It is a semiregular variable, meaning that its brightness changes at times.
- It is one of only a few dozen yellow hypergiants known about in the Milky Way.
- The star has in recent times experienced a "dredge-up" meaning that it has brought material from the core right to the surface, material that hasn't been gone through complete fusion yet.
