Ruchbah

Delta Cassiopeiae (δ Cas, δ Cassiopeiae) is a star in the northern circumpolar constellation of Cassiopeia. It has the traditional names Ksora and Ruchbah,[9] derived from the Arabic word ركبة rukbah meaning "knee". It is not to be confused with Alpha Sagittarii, which also is called Ruchbah or Rukbat.