Messier 13
E918813
Messier 13 is a prominent globular star cluster in the constellation Hercules, renowned as one of the brightest and most studied such clusters in the northern sky.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| globular cluster Messier 13 | 1 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
deep-sky object ⓘ globular star cluster ⓘ |
| age | about 11.5 billion years ⓘ |
| angularSize | about 20 arcminutes ⓘ |
| apparentMagnitudeV | 5.8 ⓘ |
| bestSeenFromHemisphere | Northern Hemisphere NERFINISHED ⓘ |
| bestViewingSeason | late spring to summer ⓘ |
| cataloguedBy | Charles Messier NERFINISHED ⓘ |
| catalogueInclusionYear | 1764 ⓘ |
| containsApproximateNumberOfStars | several hundred thousand ⓘ |
| containsStellarPopulation | Population II stars ⓘ |
| containsStellarType |
blue straggler stars
ⓘ
horizontal branch stars ⓘ red giant stars ⓘ |
| coreRadius | about 1.7 parsecs ⓘ |
| declination | +36° 28′ ⓘ |
| discoveredBy | Edmond Halley NERFINISHED ⓘ |
| discoveryYear | 1714 ⓘ |
| distanceFromEarth |
about 22,000 light-years
ⓘ
about 6.8 kiloparsecs ⓘ |
| estimatedMass | about 600,000 solar masses ⓘ |
| featuredInMessage | Arecibo message target region GENERATED ⓘ |
| galacticLatitude | +40.9° ⓘ |
| galacticLongitude | 59.0° ⓘ |
| halfLightRadius | about 3.4 parsecs ⓘ |
| hasAlternativeName |
Great Hercules Cluster
NERFINISHED
ⓘ
M13 NERFINISHED ⓘ NGC 6205 NERFINISHED ⓘ |
| hasNearbyObject |
IC 4617
NERFINISHED
ⓘ
NGC 6207 NERFINISHED ⓘ |
| locatedIn |
Galactic halo
ⓘ
Milky Way ⓘ |
| locatedInConstellation | Hercules NERFINISHED ⓘ |
| messierNumber | 13 ⓘ |
| metallicityFeH | about −1.5 ⓘ |
| ngcNumber | 6205 ⓘ |
| notableFeature |
one of the brightest globular clusters in the northern sky
ⓘ
well-studied stellar population ⓘ |
| observedInWavelength |
infrared
ⓘ
optical ⓘ ultraviolet ⓘ |
| rightAscension | 16h 41m ⓘ |
| skyLocationDescription | on the western side of the Keystone asterism in Hercules ⓘ |
| surfaceBrightness | high for a globular cluster ⓘ |
| visibility |
barely visible to the naked eye under dark skies
ⓘ
visible in small telescopes ⓘ |
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.