inal ▁apparent ▁visual ▁magnitude ▁of ▁ 4 . 7 6 . ▁The ▁distance ▁to ▁this ▁star , ▁as ▁measured ▁from ▁its ▁annual ▁par alla x ▁shift ▁of ▁, ▁is ▁around ▁ 6 2 0   light ▁years . ▁It ▁is ▁moving ▁closer ▁with ▁a ▁hel i oc ent ric ▁radial ▁velocity ▁of ▁− 4 4   km / s . ▁ ▁At ▁the ▁age ▁of ▁ 1 . 1   b ill ion ▁years , ▁this ▁is ▁an ▁evol ved ▁red ▁giant ▁star ▁with ▁a ▁stell ar ▁classification ▁of ▁M 3 -   III a . ▁It ▁is ▁a ▁slow ▁irregular ▁variable ▁of ▁type ▁L b , ▁with ▁a ▁bright ness ▁that ▁ranges ▁between ▁magn itudes ▁ 4 . 7 3 ▁and ▁ 4 . 8 5 . ▁The ▁star ▁has ▁ 2 . 2 ▁times ▁the ▁mass ▁of ▁the ▁Sun ▁and ▁has ▁expanded ▁to ▁ 1 1 7 ▁times ▁the ▁Sun ' s ▁radius . ▁It ▁is ▁radi ating ▁ 2 , 3 8 7 ▁times ▁the ▁Sun ' s ▁lum inos ity ▁from ▁its ▁en larg ed ▁photos phere ▁at ▁an ▁effective ▁temperature ▁of ▁ 3 , 5 2 9   K . ▁ ▁References ▁ ▁Category : M - type ▁gi ants ▁Category : Sem ire g ular ▁variable ▁stars ▁Category : Can es ▁Ven at ici ▁Category : D urch m uster ung ▁objects ▁ 1 2 0 9 3 3 ▁▁ 0 6 7 6 6 5 ▁▁ 5 2 1 9 ▁Can um ▁Ven atic orum ,