▁which ▁they ▁appeared ; ▁thus ▁Ar ct urus ▁he ▁named ▁the ▁" right ▁kne e ▁of ▁Bo ö tes ". ▁ ▁Most ▁of ▁the ▁Western ▁names ▁of ▁stars , ▁such ▁as ▁Alg ol ▁or ▁Bet el ge use , ▁are ▁Arab ic ▁in ▁origin . ▁ ▁In ▁ 1 6 0 3 ▁the ▁A ugs burg ▁lawyer - ur an ograph er ▁Johann ▁Bayer ▁introduced ▁the ▁current ▁classific atory ▁system ▁for ▁the ▁br ighter ▁stars , ▁in ▁which ▁stars ▁are ▁identified ▁as ▁belonging ▁to ▁their ▁const ell ations ▁by ▁Greek ▁letters , ▁in ▁( rough ly ) ▁desc ending ▁order ▁of ▁bright ness ; ▁so ▁that ▁Reg ulus , ▁bright est ▁star ▁in ▁Leo , ▁is ▁called ▁α ▁Leon is , ▁the ▁bright est ▁star ▁of ▁the ▁Lion . ▁ ▁Ast ro log ical ▁met e ors ▁Un predict able ▁observations ▁in ▁the ▁heav ens , ▁including ▁nov as ▁and ▁super nov as ▁as ▁well ▁as ▁other ▁phen omena ▁in ▁the ▁heav ens ▁such ▁as ▁com ets , ▁met e ors , ▁par hel ions , ▁and ▁even ▁rain b ows , ▁were ▁all ▁collected ▁under ▁the ▁name ▁of ▁ast ro log ical ▁met e ors . ▁ ▁According ▁to ▁P to le my , ▁variations ▁in ▁the ▁magnitude ▁of ▁fixed ▁stars ▁port ends ▁wind ▁from ▁the ▁direction ▁in ▁which ▁the ▁star ▁lies . ▁ ▁Et ym olog ically , ▁the ▁word ▁meteor ▁describes ▁any ▁phenomen on ▁in ▁the ▁heav ens , ▁and ▁der ives ▁from ▁the ▁Greek ▁ μ ε τ έ