M 13

E267996

M 13 is a globular star cluster in the constellation Hercules and one of the brightest and best-known such clusters in the northern sky.

All labels observed (2)

Label Occurrences
M13 3
M 13 canonical 1

How this entity was disambiguated

Statements (49)

Predicate Object
instanceOf Messier object
NGC object
deep-sky object
globular star cluster
absoluteMagnitudeV about −8.6
age about 11.7 billion years
on the order of 12 billion years
angularSize about 20 arcminutes
apparentMagnitudeV 5.8
belongsToCatalog Caldwell Catalogue
linked to: Caldwell catalogue

Messier Catalogue
linked to: Messier catalogue

New General Catalogue
bestSeenFromHemisphere Northern Hemisphere
bestViewingSeason northern spring
northern summer
caldwellNumber C 47
cataloguedBy Charles Messier
concentrationClass V
coreRadius about 1.7 parsecs
declination +36° 28′
discoveredBy Edmond Halley
linked to: Edmund Halley
discoveryYear 1714
distanceFromEarth about 22,000 light-years
about 6.8 kiloparsecs
galacticLatitude +40.9°
galacticLongitude 59.0°
halfLightRadius about 3.3 parsecs
hasDesignation Great Hercules Cluster
M13
Messier 13
NGC 6205
hasNearbyGalaxy IC 4617
NGC 6207
locatedIn Milky Way
Milky Way halo
locatedInConstellation Hercules
mass about 600,000 solar masses
messierNumber 13
metallicityFeH about −1.5
ngcNumber 6205
notableFeature one of the brightest globular clusters in the northern sky
resolves into stars in small telescopes
numberOfStars on the order of 300,000
several hundred thousand
observedInWavelength X-ray
optical
ultraviolet
rightAscension 16h 41m
visibleToNakedEye yes

How these facts were elicited

Referenced by (4)

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

M13 alsoKnownAs M 13
subject linked to: globular star cluster M13
Great Hercules Cluster alsoKnownAs M13
linked to: M 13
Great Hercules Cluster MessierNumber M13
linked to: M 13
NGC 6205 alsoKnownAs M13
linked to: M 13