Messier 2
E867055
Messier 2 is a bright, densely populated globular star cluster located in the constellation Aquarius, notable for its great age and rich population of ancient stars.
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf | globular star cluster ⓘ |
| absoluteMagnitudeV | about −9.0 ⓘ |
| addedToMessierCatalogueBy | Charles Messier NERFINISHED ⓘ |
| age | about 13 billion years ⓘ |
| angularSize | 16 arcminutes ⓘ |
| apparentMagnitudeV | 6.3 ⓘ |
| belongsTo | outer halo globular cluster population ⓘ |
| bestSeenIn | September ⓘ |
| concentrationClass | II ⓘ |
| contains | blue straggler stars ⓘ |
| declination | −00° 49′ 24″ ⓘ |
| discoveredBy | Jean-Dominique Maraldi NERFINISHED ⓘ |
| discoveryDate | 1746 ⓘ |
| distanceFromEarth |
about 11.5 kiloparsecs
ⓘ
about 37,500 light-years ⓘ |
| galacticLatitude | −35.77 degrees ⓘ |
| galacticLongitude | 53.37 degrees ⓘ |
| hasAlternativeName |
M 2
NERFINISHED
ⓘ
NGC7089 NERFINISHED ⓘ |
| hasColorIndexBminusV | about 0.80 ⓘ |
| hasCoreRadius | about 0.34 arcminutes ⓘ |
| hasDesignation |
M2
NERFINISHED
ⓘ
NGC 7089 NERFINISHED ⓘ |
| hasHalfLightRadius | about 1.02 arcminutes ⓘ |
| hasShape | slightly elliptical ⓘ |
| hasStellarPopulation | Population II ⓘ |
| isCataloguedIn |
Messier catalogue
NERFINISHED
ⓘ
New General Catalogue NERFINISHED ⓘ |
| isNotableFor |
great age
ⓘ
high central stellar density ⓘ low metallicity ⓘ |
| isRichIn |
old stars
ⓘ
red giant stars ⓘ |
| isVisibleWith |
binoculars under dark skies
ⓘ
small telescope ⓘ |
| locatedIn |
Galactic halo
ⓘ
Milky Way ⓘ |
| locatedInConstellation | Aquarius NERFINISHED ⓘ |
| messierCatalogueEntryYear | 1760 ⓘ |
| metallicityFeH | about −1.6 ⓘ |
| radialVelocity | about −5 km/s ⓘ |
| rightAscension | 21h 33m 27s ⓘ |
| totalLuminosity | about 100,000 times solar luminosity ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.