Messier 2

URI: https://gptkb.org/entity/Messier_2
GPTKB entity
Statements (30)
Predicate Object
gptkbp:instanceOf gptkb:open_cluster
gptkbp:addedToMessierCatalogueBy gptkb:Charles_Messier
gptkbp:addedToMessierCatalogueDate 1760
gptkbp:age 13 billion years
gptkbp:alsoKnownAs gptkb:M2
gptkbp:apparentMagnitude 6.5
gptkbp:catalogue gptkb:Messier_Catalogue
gptkbp:constellation Aquarius
gptkbp:coreRadius 0.34 arcminutes
gptkbp:declination –00° 49′ 23.7″
gptkbp:diameter 175 light-years
gptkbp:discoveredBy gptkb:Jean-Dominique_Maraldi
gptkbp:discoveredIn 1746
gptkbp:distanceFromEarth 37,500 light-years
gptkbp:hasViewOf gptkb:Northern_Hemisphere
October
https://www.w3.org/2000/01/rdf-schema#label Messier 2
gptkbp:location gptkb:Milky_Way_Galaxy
gptkbp:mass ~500,000 solar masses
gptkbp:metallicity [Fe/H] = –1.65
gptkbp:NGCNumber gptkb:NGC_7089
gptkbp:notableFeature one of the largest known globular clusters
rich in variable stars
contains over 150,000 stars
gptkbp:rightAscension 21h 33m 27.02s
gptkbp:tidalRadius 21.45 arcminutes
gptkbp:bfsParent gptkb:constellation_Aquarius
gptkb:NGC_7089
gptkb:Charles_Messier
gptkbp:bfsLayer 6