Mu Virginis [SEP] constellation
Mu Virginis
Mu Virginis (μ Vir, μ Virginis) is a star in the zodiac constellation of Virgo. It was listed in the "Calendarium" of Al Achsasi al Mouakket as "rijl al-‘awwa’", Arabic رجل العوى, meaning "The foot of the barking (dog)". With an apparent visual magnitude of 3.88, it is bright enough to be seen with the naked eye. The position of the star near the celestial equator means it is visible from most of the Earth. Based upon parallax
101 Virginis
101 Virginis is a red giant variable star in the Boötes constellation, currently on the asymptotic giant branch. It was originally catalogued as 101 Virginis by Flamsteed due to an error in the position. When it was confirmed as a variable star, it was actually within the border of the constellation Bootes and given the name CY Boötis.
The variability is not strongly defined but a primary period of 23 days and a secondary period of 340 days have been reported.
CY Boo is listed in the Hipparcos catalogue