Hercules Globular Cluster
E476465
The Hercules Globular Cluster is a bright, densely packed spherical star cluster in the constellation Hercules, notable as one of the most prominent and studied globular clusters in the northern sky.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
deep-sky object
ⓘ
globular cluster ⓘ star cluster ⓘ |
| age | about 11–13 billion years ⓘ |
| alsoKnownAs |
M13
NERFINISHED
ⓘ
Messier 13 NERFINISHED ⓘ NGC 6205 NERFINISHED ⓘ |
| angularSize | about 20 arcminutes ⓘ |
| apparentMagnitudeV | 5.8 ⓘ |
| bestSeenIn |
spring
ⓘ
summer ⓘ |
| cataloguedBy | Charles Messier NERFINISHED ⓘ |
| clusterShape | roughly spherical ⓘ |
| contains |
horizontal branch stars
ⓘ
red giant stars ⓘ |
| coreConcentration | high ⓘ |
| declination | +36° 28′ ⓘ |
| discoveredBy | Edmond Halley NERFINISHED ⓘ |
| discoveryYear | 1714 ⓘ |
| distanceFromEarth |
about 22,000 light-years
ⓘ
about 6.8 kiloparsecs ⓘ |
| estimatedStarCount |
around 300,000
ⓘ
several hundred thousand ⓘ |
| galacticHaloMember | true ⓘ |
| hemisphere | northern sky ⓘ |
| locatedInConstellation | Hercules NERFINISHED ⓘ |
| locatedInGalaxy | Milky Way NERFINISHED ⓘ |
| messierNumber | M13 NERFINISHED ⓘ |
| metallicity | low ⓘ |
| ngcNumber | NGC 6205 NERFINISHED ⓘ |
| notability | one of the brightest globular clusters in the northern sky ⓘ |
| notableFeature |
bright, dense core
ⓘ
well-resolved outer stars in amateur telescopes ⓘ |
| observedBy | Hubble Space Telescope NERFINISHED ⓘ |
| observedWith |
binoculars
ⓘ
large telescopes ⓘ small telescopes ⓘ |
| partOf |
Messier catalogue
NERFINISHED
ⓘ
New General Catalogue NERFINISHED ⓘ |
| rightAscension | 16h 41m ⓘ |
| skyRegion | between stars Eta Herculis and Zeta Herculis ⓘ |
| stellarPopulation | Population II stars ⓘ |
| surfaceBrightness | high ⓘ |
| usedForStudyOf |
dynamics of globular clusters
ⓘ
metal-poor stellar populations ⓘ stellar evolution ⓘ |
| visibility | northern hemisphere ⓘ |
| visibleToNakedEye | under dark skies ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.