GCl 99

E484153

GCl 99, also known as Messier 28, is a bright globular star cluster located in the constellation Sagittarius.

All labels observed (1)

Label Occurrences
GCl 99 canonical 4

How this entity was disambiguated

Statements (35)

Predicate Object
instanceOf Messier object
globular star cluster
alsoKnownAs M28
Messier 28
NGC 6626
angularSize about 11 arcminutes
apparentMagnitudeV 6.9
appearsNear Galactic center
linked to: Milky Way center
bestSeenInMonth July
catalog Messier catalogue
New General Catalogue
constellation Sagittarius
contains millisecond pulsars
pulsars
variable stars
declination −24° 52′
discoveredBy Charles Messier
discoveryDate 1764
distanceFromEarth about 18,000 light-years
about 5,500 parsecs
GalacticLatitude about −5.6°
GalacticLongitude about 7.8°
galacticPopulation Population II
hasStellarPopulation old, metal-poor stars
hostGalaxy Milky Way
locatedIn Milky Way
locatedInRegion Galactic bulge region
linked to: Milky Way center
metallicity[Fe/H] about −1.3
observedIn X-ray wavelengths
optical wavelengths
radio wavelengths
partOf Milky Way globular cluster system
rightAscension 18h 24m
ShapleySawyerConcentrationClass IV
visibleInHemisphere Southern celestial hemisphere

How these facts were elicited

Referenced by (4)

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

Messier 28 otherName GCl 99
Messier 28 catalogNumber GCl 99
NGC 6656 alsoKnownAs GCl 99
NGC 6626 hasAlternateName GCl 99