▁is ▁the ▁bright est , ▁r anging ▁from ▁magnitude ▁ 6 . 6 ▁to ▁ 1 3 . 2 ▁over ▁a ▁period ▁of ▁ 3 3 2 . 9 4 ▁days . ▁V ▁Can is ▁Minor is ▁ranges ▁from ▁magnitude ▁ 7 . 4 ▁to ▁ 1 5 . 1 ▁over ▁a ▁period ▁of ▁ 3 6 6 . 1 ▁days . ▁Similar ▁in ▁magnitude ▁is ▁R ▁Can is ▁Minor is , ▁which ▁has ▁a ▁maximum ▁of ▁ 7 . 3 , ▁but ▁a ▁significantly ▁br ighter ▁minimum ▁of ▁ 1 1 . 6 . ▁An ▁S - type ▁star , ▁it ▁has ▁a ▁period ▁of ▁ 3 3 7 . 8 ▁days . ▁ ▁Y Z ▁Can is ▁Minor is ▁is ▁a ▁red ▁d war f ▁of ▁spectral ▁type ▁M 4 . 5 V ▁and ▁magnitude ▁ 1 1 . 2 , ▁roughly ▁three ▁times ▁the ▁size ▁of ▁Jup iter ▁and ▁ ▁from ▁Earth . ▁It ▁is ▁a ▁f lare ▁star , ▁em itting ▁un predict able ▁out bur st s ▁of ▁energy ▁for ▁mere ▁minutes , ▁which ▁might ▁be ▁much ▁more ▁powerful ▁analog ues ▁of ▁solar ▁fl ares . ▁Lu y ten ' s ▁Star ▁( G J ▁ 2 7 3 ) ▁is ▁a ▁red ▁d war f ▁star ▁of ▁spectral ▁type ▁M 3 . 5 V ▁and ▁close ▁neighbour ▁of ▁the ▁Sol ar ▁System . ▁Its ▁visual ▁magnitude ▁of ▁ 9 . 9 ▁rend ers ▁it ▁too ▁faint ▁to ▁be ▁seen ▁with ▁the ▁n aked ▁eye , ▁even ▁though