Messier 66
This galaxy is a member of a small group of galaxies that includes M65 and NGC 3628 , known as the Leo Triplet , or the M66 Group . 
<triplet> M65 <subj> Leo Triplet <obj> part of <triplet> NGC 3628 <subj> Leo Triplet <obj> part of <triplet> Leo Triplet <subj> M65 <obj> has part <subj> NGC 3628 <obj> has part