|
gptkbp:instanceOf
|
gptkb:open_cluster
|
|
gptkbp:affiliatedWith
|
gptkb:Milky_Way_galaxy
|
|
gptkbp:age
|
~12 billion years
|
|
gptkbp:alsoKnownAs
|
gptkb:NGC_7078
gptkb:M15
|
|
gptkbp:apparentMagnitude
|
6.2
|
|
gptkbp:bestViewedIn
|
autumn (Northern Hemisphere)
|
|
gptkbp:cataloguedIn
|
gptkb:Charles_Messier
|
|
gptkbp:catalogueNumber
|
gptkb:NGC_7078
gptkb:Messier_15
|
|
gptkbp:contains
|
gptkb:Pease_1
|
|
gptkbp:coreRadius
|
0.14 arcminutes
|
|
gptkbp:declination
|
+12° 10′ 0″
|
|
gptkbp:diameter
|
175 light-years
|
|
gptkbp:discoveredBy
|
gptkb:Jean-Dominique_Maraldi
|
|
gptkbp:discoveredIn
|
1746
|
|
gptkbp:distanceFromEarth
|
33,600 light-years
|
|
gptkbp:galacticLatitude
|
65.01°
–27.31°
|
|
gptkbp:hasBlackHoleCandidate
|
yes
|
|
gptkbp:hasBlueStragglers
|
yes
|
|
gptkbp:hasCepheidVariables
|
yes
|
|
gptkbp:hasDenseCore
|
yes
|
|
gptkbp:hasMillisecondPulsars
|
yes
|
|
gptkbp:hasMultipleStellarPopulations
|
yes
|
|
gptkbp:hasPulsar
|
yes
|
|
gptkbp:hasXRaySource
|
yes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 15
|
|
gptkbp:isOneOfTheOldestGlobularClusters
|
yes
|
|
gptkbp:locatedIn
|
constellation Pegasus
|
|
gptkbp:mass
|
~450,000 solar masses
|
|
gptkbp:metallicity
|
[Fe/H] = –2.37
|
|
gptkbp:notableFor
|
contains a planetary nebula (Pease 1)
core-collapsed cluster
|
|
gptkbp:partOf
|
gptkb:Messier_Catalogue
gptkb:New_General_Catalogue
|
|
gptkbp:rating
|
over 100,000
|
|
gptkbp:rightAscension
|
21h 30m 0s
|
|
gptkbp:tidalRadius
|
21.5 arcminutes
|
|
gptkbp:variableStar
|
yes
|
|
gptkbp:visibleToNakedEye
|
yes
|
|
gptkbp:visualSize
|
18.0 arcminutes
|
|
gptkbp:bfsParent
|
gptkb:M15
|
|
gptkbp:bfsLayer
|
6
|