Tags: Star.
Mu Cassiopeiae (μ Cas μ Cassiopeiae) is a binary star system in the constellation Cassiopeia. This system shares the name Marfak with Theta Cassiopeiae and the name was from Al Marfik or Al Mirfaq (المرفق) meaning the elbow.In 1961 the close binary nature of this system was discovered by Nicholas E. Wagman at the Allegheny Observatory. Since then the orbital elements of the two stars have been fairly well established.
