EntityQ1104481· pop 28· linked from 187 articlesQ1104481Sign in to savegalaxyConnectionslist of stars in HydraEntityQ1105445EntityNGC 3977Entitylist of NGC objects (3001–4000)EntityNGC 3632EntitystarEntitygalaxyEntityconstellationEntitynebulaEntitysupernovaEntityexoplanetEntityInternational Astronomical UnionEntityJohn Frederick William HerschelEntityHydraEntitystar clusterEntityapparent magnitudeEntityright ascensionEntitydeclinationEntityMessier objectEntityNew General CatalogueEntityCategoriesDiscoveries by John HerschelHydra (constellation)