M30
E867066
M30 is a globular star cluster in the constellation Capricornus, notable for its dense core and great age.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | globular star cluster ⓘ |
| absoluteMagnitudeV | about −8.3 ⓘ |
| age | about 12.9 billion years ⓘ |
| alsoKnownAs |
Messier 30
NERFINISHED
ⓘ
NGC 7099 NERFINISHED ⓘ |
| angularSize | 11.0 arcminutes ⓘ |
| apparentMagnitudeV | 7.2 ⓘ |
| belongsTo |
Local Group
NERFINISHED
ⓘ
Milky Way globular cluster system ⓘ |
| bestSeenFromHemisphere | Southern Hemisphere NERFINISHED ⓘ |
| bestSeenInMonth | August ⓘ |
| catalog |
Messier catalogue
NERFINISHED
ⓘ
New General Catalogue NERFINISHED ⓘ |
| catalogNumber |
M30
ⓘ
NGC 7099 NERFINISHED ⓘ |
| contains |
blue straggler stars
ⓘ
old stars ⓘ variable stars ⓘ |
| coreCollapseStatus | core-collapsed ⓘ |
| coreConcentration | high ⓘ |
| declination | −23° 10′ 47″ ⓘ |
| discoveredBy | Charles Messier NERFINISHED ⓘ |
| discovererNationality | French ⓘ |
| discoveryDate | 1764 ⓘ |
| distanceFromEarth |
about 27,000 light-years
ⓘ
about 8.3 kiloparsecs ⓘ |
| galacticLatitude | −46.84° ⓘ |
| galacticLongitude | 27.18° ⓘ |
| galacticPopulation | Population II NERFINISHED ⓘ |
| hasColorIndexBminusV | about 0.71 ⓘ |
| hasCore | dense core ⓘ |
| hasHalfLightRadius | about 1.0 arcminutes ⓘ |
| hasShape | roughly spherical ⓘ |
| hasTidalRadius | about 18.3 arcminutes ⓘ |
| locatedIn |
Galactic halo
NERFINISHED
ⓘ
Milky Way ⓘ |
| locatedInConstellation | Capricornus NERFINISHED ⓘ |
| metallicityFeH | about −2.3 ⓘ |
| observedWith | amateur telescopes ⓘ |
| resolvableInTelescope | yes ⓘ |
| rightAscension | 21h 40m 22s ⓘ |
| spectralTypeDominant | G-type giants ⓘ |
| surfaceBrightness | high for a globular cluster ⓘ |
| visibilityInBinoculars | visible as fuzzy patch ⓘ |
| visibilityToNakedEye | not visible to naked eye ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.