Named Stars: SHEDIR (Alpha Cas) Caph (Beta Cas) Ruchbah (Delta Cas) Segin (Epsilon Cas) Achird (Eta Cas) Marfak (Theta Cas) Marfak (Mu Cas)
Two open clusters are visible in binoculars within the constellation.
The leading star, alpha Cas, also called Shedir (arab.: the breast), is an irregular variable star (K0IIIa), which forms with an 9th mag blue neighbour an optical double star (i.e. not physically related).
Alpha Cassiopeiae is called Shedir or Schedar, from the Arabic al-sadr meaning ‘the breast', which position it marks.
Other names for the star are Shedir or Schedir, which, according to Allen probably derives from the Arabic Al Sadr, "The Breast. Alternatively the name may derive from the Persian name Shuter for the constellation.
Description of the Star ...
[1878] alpha Cassiopeiae, Shedir or Shedar ("the breast") has a magnitude of 2.25 and is the second brightest star in the constellation. It is an orange giant more than 500 times brighter than the Sun.
 See also: Constellation, Constellations, Cassiopeia, Star, Rock
  
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