NGC 147
E459118
NGC 147 is a dwarf spheroidal satellite galaxy of the Andromeda Galaxy located in the Local Group.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
dwarf spheroidal galaxy ⓘ galaxy ⓘ satellite galaxy ⓘ |
| absoluteMagnitudeV | about −15.1 ⓘ |
| alsoKnownAs |
DDO 3
NERFINISHED
ⓘ
PGC 2004 NERFINISHED ⓘ UGC 326 NERFINISHED ⓘ |
| angularSize | about 13.2 arcminutes ⓘ |
| apparentMagnitudeV | about 9.5 ⓘ |
| belongsTo | Local Group dwarf spheroidal galaxies NERFINISHED ⓘ |
| catalog | New General Catalogue NERFINISHED ⓘ |
| constellation | Cassiopeia NERFINISHED ⓘ |
| contains | globular clusters ⓘ |
| coordinateSystem | equatorial coordinate system ⓘ |
| darkMatterContent | dark-matter dominated ⓘ |
| declination | +48° 30′ ⓘ |
| discoveredBy | John Herschel NERFINISHED ⓘ |
| discoveryDate | 8 September 1829 ⓘ |
| distanceFromAndromedaGalaxy | about 120 kiloparsecs ⓘ |
| distanceFromEarth |
about 2.3 million light-years
ⓘ
about 700 kiloparsecs ⓘ |
| environment | halo of the Andromeda Galaxy ⓘ |
| galaxyType | early-type dwarf galaxy ⓘ |
| gasContent | gas-poor ⓘ |
| groupMembership | NGC 147–NGC 185 pair NERFINISHED ⓘ |
| hemisphere | northern sky ⓘ |
| hostGalaxy | Andromeda Galaxy NERFINISHED ⓘ |
| isNeighborOf | NGC 185 NERFINISHED ⓘ |
| luminosity | of order 10^7 solar luminosities ⓘ |
| mass | of order 10^8 solar masses ⓘ |
| memberOf | Local Group NERFINISHED ⓘ |
| metallicity | low metallicity ⓘ |
| morphologicalType | dSph ⓘ |
| nearbyGalaxy | NGC 185 NERFINISHED ⓘ |
| observationalDifficulty | requires dark skies and moderate aperture to resolve ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| positionRelativeToAndromeda | northwest of the Andromeda Galaxy ⓘ |
| radialVelocity | about −193 km/s ⓘ |
| redshift | about −0.00068 ⓘ |
| rightAscension | 00h 33m ⓘ |
| satelliteOf | Andromeda Galaxy NERFINISHED ⓘ |
| starFormationActivity | no current star formation ⓘ |
| starFormationHistory | star formation ceased several Gyr ago ⓘ |
| stellarPopulation | dominated by old stars ⓘ |
| surfaceBrightness | low surface brightness ⓘ |
| surfaceBrightnessProfile | smooth and diffuse ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.