NGC 6864
E526256
NGC 6864 is a dense globular star cluster in the constellation Sagittarius, notable for its rich stellar population and classification as Messier 75 in Charles Messier’s catalog.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf | globular star cluster ⓘ |
| absoluteMagnitudeV | −8.5 ⓘ |
| age | ~13 billion years ⓘ |
| alsoKnownAs |
M75
NERFINISHED
ⓘ
Messier 75 NERFINISHED ⓘ |
| angularSize | 6.8 arcminutes ⓘ |
| apparentMagnitudeRange | 8–9 ⓘ |
| apparentMagnitudeV | 8.6 ⓘ |
| belongsTo | Galactic globular cluster system ⓘ |
| bestSeenFromHemisphere | Southern Hemisphere NERFINISHED ⓘ |
| bestSeenInSeason | summer ⓘ |
| catalog | New General Catalogue NERFINISHED ⓘ |
| concentrationClass | I ⓘ |
| coreConcentration | high ⓘ |
| declination | −21° 55′ 17″ ⓘ |
| discoveredBy | Pierre Méchain NERFINISHED ⓘ |
| discoveryYear | 1780 ⓘ |
| distanceFromEarth |
~20.7 kiloparsecs
ⓘ
~67,500 light-years ⓘ |
| galacticLatitude | −25.75° ⓘ |
| galacticLongitude | 12.18° ⓘ |
| hasAlternativeDesignation |
GCl 116
NERFINISHED
ⓘ
Melotte 222 NERFINISHED ⓘ |
| hasCentralDensity | very high ⓘ |
| hasRichStellarPopulation | true ⓘ |
| hasStellarPopulation | Population II stars ⓘ |
| hostGalaxy | Milky Way NERFINISHED ⓘ |
| includedInCatalog |
Messier catalogue
NERFINISHED
ⓘ
NGC catalogue NERFINISHED ⓘ |
| isDenseCluster | true ⓘ |
| isNotableFor |
classification as Messier 75
ⓘ
high central concentration ⓘ rich stellar population ⓘ |
| locatedIn |
Milky Way
ⓘ
Milky Way halo NERFINISHED ⓘ |
| locatedInConstellation | Sagittarius NERFINISHED ⓘ |
| mass | several hundred thousand solar masses ⓘ |
| messierNumber | 75 ⓘ |
| metallicityFeH | −1.29 ⓘ |
| observedInWavelength |
infrared
ⓘ
optical ⓘ |
| radialVelocity | ~−190 km/s ⓘ |
| rightAscension | 20h 06m 05s ⓘ |
| shapleySawyerClass | I ⓘ |
| skyLocation | near the border of Sagittarius and Capricornus ⓘ |
| visibleWith | small telescope ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.