Messier 54

E114012
Messier object NGC object deep-sky object globular star cluster

Messier 54 is a dense globular star cluster located in the constellation Sagittarius, notable for being one of the first globular clusters found to belong to a dwarf galaxy outside the Milky Way.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (2)

Label Occurrences
Messier 54 canonical 2
globular cluster M54 2

Statements (47)

Predicate Object
instanceOf Messier object ⓘ
NGC object ⓘ
deep-sky object ⓘ
globular star cluster ⓘ
absoluteMagnitude_V -10.0 ⓘ
age_Gyr about 12.5 ⓘ
alsoKnownAs M54 ⓘ
NGC 6715 ⓘ
angularSize_arcmin 9.1 ⓘ
apparentMagnitude_V 7.6 ⓘ
belongsTo Local Group ⓘ
belongsToGalaxy Sagittarius Dwarf Spheroidal Galaxy ⓘ
surface form: Sagittarius Dwarf Elliptical Galaxy

Sagittarius Dwarf Spheroidal Galaxy ⓘ
catalog Messier catalogue ⓘ
New General Catalogue ⓘ
catalogNumber M54 ⓘ
NGC 6715 ⓘ
clusterConcentrationClass III ⓘ
constellation Sagittarius ⓘ
contains tens of thousands of stars ⓘ
coreRadius_ly about 0.6 ⓘ
declination −30° 28′ 47″ ⓘ
discoveredBy Charles Messier ⓘ
discoveryDate 1778 ⓘ
discoveryInstrument telescope ⓘ
distanceFromEarth_ly 87000 ⓘ
distanceFromGalacticCenter_ly 65000 ⓘ
distanceFromSun_ly 87000 ⓘ
galacticCoordinates_b -14.09 ⓘ
galacticCoordinates_l 5.61 ⓘ
galacticPopulation halo ⓘ
halfLightRadius_ly about 9 ⓘ
hasCentralDensity very high ⓘ
hasStellarPopulation old, metal-poor stars ⓘ
hostGalaxyType dwarf spheroidal galaxy ⓘ
locatedIn Milky Way stellar halo ⓘ
surface form: Milky Way halo

Sagittarius Dwarf Spheroidal Galaxy ⓘ
mass_solarMasses about 2000000 ⓘ
metallicity_Fe_H -1.5 ⓘ
notableFor being one of the first globular clusters identified as belonging to an external dwarf galaxy ⓘ
high central concentration ⓘ
observedIn optical wavelengths ⓘ
radialVelocity_km_s about 142 ⓘ
rightAscension 18h 55m 03.3s ⓘ
tidalRadius_ly about 150 ⓘ
visibility best seen from southern and equatorial latitudes ⓘ
visibilitySeason northern summer ⓘ

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Sagittarius → contains → Messier 54 ⓘ
SagDEG → contains → Messier 54 ⓘ
this entity surface form: globular cluster M54
Sagittarius Stream → associatedWith → Messier 54 ⓘ
this entity surface form: globular cluster M54
M54 → alsoKnownAs → Messier 54 ⓘ