KnowraMessier objectLinked fromLinked fromThe 5 pages that link to Messier object, each with the reason it gives.All 5Broader topic 2Narrower topic 2Compared with 1Equatorial coordinate systemBroader topic: Messier entries are commonly identified by their equatorial coordinates.Messier catalogBroader topic: M-numbers provide a compact naming system used in observation and astronomy literature.New General CatalogueCompared with: Many familiar deep-sky objects carry both Messier and NGC designations.Dumbbell NebulaNarrower topic: M27 is the designation by which the Dumbbell Nebula is widely known.Beehive ClusterNarrower topic: Its alternate designation, M44, comes from this catalog.