M 13

E267996

Messier object NGC object deep-sky object globular star cluster

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.

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All labels observed (2)

Label	Occurrences
M13	3
M 13 canonical	1

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 ⓘ surface form: Caldwell Catalogue Messier catalogue ⓘ surface form: 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	Edmund Halley ⓘ surface form: Edmond 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 stellar halo ⓘ surface form: 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 ⓘ

Referenced by (4)

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

globular star cluster M13 → alsoKnownAs → M 13 ⓘ

subject surface form: M13

Great Hercules Cluster → alsoKnownAs → M 13 ⓘ

this entity surface form: M13

Great Hercules Cluster → MessierNumber → M 13 ⓘ

this entity surface form: M13

NGC 6205 → alsoKnownAs → M 13 ⓘ

this entity surface form: M13