▁object ▁ ▁HD ▁ 2 9 4 2 7 1 ▁and ▁HD ▁ 2 9 4 2 7 2 ▁make ▁up ▁the ▁" double " ▁star ▁Str uve ▁ 7 6 1 ▁( or ▁ST F ▁ 7 6 1 ). ▁ ▁It ▁is ▁three ▁arc ▁minutes ▁from ▁ σ ▁Or ion is , ▁which ▁is ▁also ▁known ▁as ▁Str uve ▁ 7 6 2 . ▁ ▁Over ▁ 3 0 ▁other ▁probable ▁cluster ▁members ▁have ▁been ▁detected ▁within ▁an ▁arc ▁minute ▁of ▁the ▁central ▁star , ▁mostly ▁brown ▁d war fs ▁and ▁planet ary ▁mass ▁objects ▁such ▁as ▁S ▁Ori ▁ 7 0 , ▁but ▁including ▁the ▁early ▁M ▁red ▁d war fs ▁ 2 MA SS ▁J 0 5 3 8 4 7 4 6 - 0 2 3 5 2 5 2 ▁and ▁ 2 MA SS ▁J 0 5 3 8 4 3 0 1 - 0 2 3 6 1 4 5 . ▁ ▁In ▁total , ▁several ▁hundred ▁low ▁mass ▁objects ▁are ▁thought ▁to ▁be ▁cluster ▁members , ▁including ▁around ▁a ▁hundred ▁spect ro scop ically ▁measured ▁class ▁M ▁stars , ▁around ▁ 4 0 ▁K ▁class ▁stars , ▁and ▁a ▁hand ful ▁of ▁G ▁and ▁F ▁class ▁objects . ▁ ▁Many ▁are ▁grouped ▁in ▁a ▁central ▁core , ▁but ▁there ▁is ▁a ▁h alo ▁of ▁associated ▁objects ▁scattered ▁across ▁more ▁than ▁ 1 0 ▁arc - min utes . ▁▁ σ ▁Or ion is ▁AB ▁The ▁bright est ▁member ▁of ▁the ▁ σ ▁Or ion is