EntityQ113302· pop 24· linked from 342 articlesQ113302Sign in to saveplanetary nebulaConnectionsplanetary nebulaEntityepochEntitystarEntitygalaxyEntityconstellationEntitynebulaEntityWilliam HerschelEntityexoplanetEntityCygnusEntityastronomerEntityCepheusEntitystar clusterEntityapparent magnitudeEntityright ascensionEntitydeclinationEntityNew General CatalogueEntityMessier 2EntityMessier 15EntityHelix NebulaEntityBayer designationEntityCategoriesAstronomical objects discovered in 1787Cepheus (constellation)Discoveries by William HerschelNGC objectsPlanetary nebulae