GCl 111

E491712

GCl 111 is a globular star cluster in the constellation Sagittarius, better known as Messier 55 in the Messier catalog of deep-sky objects.

All labels observed (1)

Label Occurrences
GCl 111 canonical 1

How this entity was disambiguated

Statements (45)

Predicate Object
instanceOf globular star cluster ⓘ
age about 12.5 billion years ⓘ
alsoKnownAs M55 ⓘ
Messier 55 ⓘ
NGC 6809 ⓘ
angularSize 19 arcminutes ⓘ
apparentMagnitudeV 6.3 ⓘ
belongsTo Local Group ⓘ
bestViewingMonth July ⓘ
bestViewingSeason northern summer ⓘ
southern winter ⓘ
catalog GCl catalogue ⓘ
Messier catalogue ⓘ
New General Catalogue ⓘ
catalogNumber GCl 111 ⓘ
M55 ⓘ
NGC 6809 ⓘ
constellation Sagittarius ⓘ
contains RR Lyrae variable stars ⓘ
old, metal-poor stars ⓘ
coreAppearance loose, not strongly concentrated ⓘ
coreConcentration low ⓘ
declination −30° 58′ ⓘ
discoveredBy Nicolas-Louis de Lacaille ⓘ
linked to: Nicolas de Lacaille
discoveryYear 1752 ⓘ
distanceFromEarth about 17,600 light-years ⓘ
about 5.4 kiloparsecs ⓘ
galacticComponent galactic halo ⓘ
galacticLatitude about −23° ⓘ
galacticLongitude about 9° ⓘ
hasMessierNumber 55 ⓘ
hasNGCNumber 6809 ⓘ
hemisphereVisibility best seen from southern hemisphere ⓘ
hostGalaxy Milky Way ⓘ
locatedIn Milky Way ⓘ
locatedNear galactic center direction ⓘ
metallicity low ⓘ
metallicityFeH about −1.9 ⓘ
observationalAppearance large, diffuse globular cluster ⓘ
observedFrom Cape of Good Hope ⓘ
OosterhoffType Oosterhoff type II ⓘ
rightAscension 19h 40m ⓘ
surfaceBrightness low ⓘ
type Class XI globular cluster (Shapley–Sawyer) ⓘ
visibility visible in binoculars under dark skies ⓘ

How these facts were elicited

Referenced by (1)

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

Messier 55 → otherName → GCl 111 ⓘ