▁Sol ar ▁System , ▁its ▁photos phere ▁would ▁eng ulf ▁the ▁orbit ▁of ▁Sat urn . ▁ ▁Disc overy ▁ ▁West er l und ▁ 1 ▁was ▁discovered ▁by ▁Beng t ▁West er l und ▁in ▁ 1 9 6 1 ▁during ▁an ▁inf ra red ▁survey ▁in ▁the ▁Zone ▁of ▁A void ance ▁of ▁the ▁sky , ▁and ▁described ▁as ▁" a ▁heavily ▁red den ed ▁cluster ▁in ▁Ara ". ▁ ▁The ▁spectral ▁types ▁of ▁the ▁component ▁stars ▁could ▁not ▁be ▁determined ▁at ▁the ▁time ▁except ▁for ▁the ▁bright est ▁star ▁which ▁was ▁tent atively ▁considered ▁type ▁M . ▁ ▁In ▁ 1 9 6 9 , ▁Borg man , ▁K orn ne ef , ▁and ▁S ling er land ▁conducted ▁a ▁phot ometric ▁survey ▁of ▁the ▁cluster ▁and ▁assigned ▁letters ▁to ▁the ▁stars ▁they ▁measured . ▁ ▁This ▁star , ▁identified ▁as ▁a ▁strong ▁radio ▁source , ▁was ▁given ▁the ▁letter ▁" A ". ▁ ▁This ▁leads ▁to ▁the ▁design ation ▁West er l und - 1 ▁B KS ▁A ▁used ▁at ▁Sim bad , ▁although ▁the ▁cluster ▁was ▁not ▁known ▁as ▁West er l und ▁ 1 ▁at ▁that ▁time . ▁ ▁At ▁the ▁time ▁it ▁was ▁referred ▁to ▁as ▁Ara ▁A , ▁with ▁another ▁strong ▁radio ▁source ▁in ▁the ▁cluster ▁called ▁Ara ▁C . ▁Its ▁bright ness ▁in ▁the ▁radio ▁spectrum ▁makes ▁it ▁one ▁of ▁the ▁rare ▁" radio ▁stars ". ▁ ▁West er l und ▁made ▁spect ro scop ic ▁observations ▁of ▁the ▁cluster , ▁still ▁not ▁known