▁It ▁has ▁ 2 . 6 7 ▁times ▁the ▁mass ▁of ▁the ▁Sun ▁and ▁is ▁radi ating ▁ 7 1 ▁times ▁the ▁Sun ' s ▁lum inos ity ▁from ▁its ▁photos phere ▁at ▁an ▁effective ▁temperature ▁of ▁ 1 0 , 5 0 7   K . ▁ ▁References ▁ ▁Category : A - type ▁main - sequence ▁stars ▁Category : Shell ▁stars ▁Category : S pect ro scop ic ▁bin aries ▁Category : V ul pe cul a ▁Category : D urch m uster ung ▁objects ▁V ul pe cul ae , ▁ 2 9 ▁ 1 9 6 7 2 4 ▁ 1 0 1 8 6 7 ▁ 7 8 9 1 <0x0A> </s> ▁The ▁water - water ▁ener get ic ▁re actor ▁( W W ER ), ▁or ▁V VER ▁( from ▁; ▁transl iter ates ▁as ▁v odo - v ody ano i ▁ener get ich es ky ▁re akt or ; ▁water - water ▁power ▁re actor ) ▁is ▁a ▁series ▁of ▁press ur ized ▁water ▁re actor ▁designs ▁originally ▁developed ▁in ▁the ▁Soviet ▁Union , ▁and ▁now ▁Russia , ▁by ▁OK B ▁G id ro press . ▁The ▁idea ▁of ▁a ▁re actor ▁was ▁proposed ▁at ▁the ▁K urch at ov ▁Institute ▁by ▁Sav ely ▁Mo ise ev ich ▁Fe in berg . ▁V VER ▁were ▁originally ▁developed ▁before ▁the ▁ 1 9 7 0 s , ▁and ▁have ▁been ▁contin ually ▁updated . ▁As ▁a ▁result , ▁the ▁name ▁V VER ▁is ▁associated ▁with ▁a