Mu1 Cancri
Mu1 Cancri, Latinized from μ1 Cancri, is an evolved red giant star in the zodiac constellation of Cancer. Parallax measurements made by the Hipparcos spacecraft put it about 740 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.28. The name Mu1 comes from the Bayer naming system: the "1" in the name is because it appears to be close to 10 Cancri. Mu1 Cancri is a variable star and was given the variable star designation BL Cancri. It is a slow irregular variable with periods of 22.6, 37.8, and 203.7 days.
