It is similar to our Sun, being a yellow-white G-class hydrogen fusing dwarf, slightly cooler than the Sun with a surface temperature of 5730 Kelvin. Eta Cassiopeiae is the nearest star in Cassiopeia to our solar system, only 19.4 light-years away. There are several other fainter stars within this constellation that are not all visible to the naked eye. Star chart for the constellation Cassiopeia. The star’s other traditional names are al-Sanam al-Nakah and al-Kaff al-Khadib. Its traditional name is derived from the Arabic kaf, which means “palm” (i.e. Caph is approximately 54.5 light-years from earth.Ĭaph has a magnitude of 2.27. It is a giant star belonging to the spectral type F2. The final star in the asterism is Caph or also called Beta Cassiopeiae. The star’s name Schedar is derived from the Arabic şadr, which translates to “breast.” The name refers to the star’s position, marking Cassiopeia’s heart. Its magnitude is in the range from 2.20 to 2.23 magnitudes. It is approximately 228 light-years distant from our sun. It is located at the bottom right of the W asterism. Schedar or also known as Alpha Cassiopeiae is the next star in Cassiopeia’s asterism. Navi is a Semordnilap name Ivan spelled backward. This is because the star was used as a navigational reference point by astronauts. The Chinese call this star Tsih, translating to “the whip.” Gamma also has the nickname Navi, after the American astronaut Virgil Ivan Grissom. Gamma can emit 10 times higher the amounts of X-ray radiation than that of other B class stars. Gamma Cassiopeiae is an eruptive variable star. It exhibits irregular variations in brightness, which ranges between 2.20 magnitudes and 3.40 magnitudes. Gamma Cassiopeiae has a luminosity 40,000 times that of our Sun. It is a blue star that is approximately 610 light-years distant from our planet. This star is the brightest star in the constellation. Moving inwards to the middle of the asterism is the star referred to as Gamma Cassiopeiae (Navi). The star’s customary name, Ruchbah, comes from the Arabic rukbah, which means “the knee”. Ruchbah is the fourth brightest star in the Cassiopeia constellation. Ruchbah has a magnitude that can vary between 2.68 and 2.74. It is about 99 light-years distant from our planet. Ruchbah is an Algol-type eclipsing binary star. Moving inward on the “W” shape and to the lower right of Epsilon Cassiopeiae is the star known as Ruchbah or also referred to as Delta Cassiopeiae. These types of stars spin rapidly causing them to emit a ring of matter. Segin belongs to a class of stars classified as B Stars. This star is 6.5 times massive than our sun and is 4.2 times wider. It is about 430 light-years away from our planet. The surface temperatures on this star are approximately 15,680K. Epsilon Cassiopeiae is a hot bright blue-white giant. The first star to the left in Cassiopeia is Epsilon Cassiopeiae (also called Segin).
Common Names: Cassiopeia’s Chair, The Lady of the Chair, Celestial M, Lazy M.Named Stars: Segin, Ruchbah, Navi, Schedar, Caph.The “W” Shape of Cassiopeia in the night sky. A section of the Milky Way runs through Cassiopeia, containing a number of open clusters, young luminous galactic disc stars, and nebulae.Ĭassiopeia belongs to the Perseus family of constellations, along with Andromeda, Auriga, Cepheus, Cetus, Lacerta, Pegasus, Perseus, and Triangulum. The Cassiopeia constellation gets its name from the vain Queen Cassiopeia found in Greek Mythology. This asterism is formed by five bright stars Epsilon, Ruchbah (Delta), Gamma, Schedar (Alpha Cassiopeiae), and Caph (Beta Cassiopeiae). It is famous for its distinctive “W” shape. Cassiopeia is one of the 88 modern constellations we see today. It was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy. Cassiopeia is a constellation found in the northern sky.
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