NGC 221
E474413
NGC 221 is a compact dwarf elliptical galaxy in the Local Group, best known as the bright satellite galaxy M32 orbiting the Andromeda Galaxy.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
dwarf elliptical galaxy ⓘ satellite galaxy ⓘ |
| absoluteMagnitudeV | -16.4 ⓘ |
| alsoKnownAs |
M32
NERFINISHED
ⓘ
Messier 32 NERFINISHED ⓘ |
| angularSize_arcmin | 8.7 × 6.4 ⓘ |
| apparentMagnitudeV |
8.1
ⓘ
8.2 ⓘ |
| bestSeenInMonth | October ⓘ |
| catalog | New General Catalogue NERFINISHED ⓘ |
| centralBlackHoleMass_solar | (2–3)×10^6 ⓘ |
| declination | +40° 51′ 55″ ⓘ |
| discoveredBy | Guillaume Le Gentil NERFINISHED ⓘ |
| discoveryYear | 1749 ⓘ |
| distanceFromEarth_ly | 2600000 ⓘ |
| distanceFromEarth_Mpc | 0.8 ⓘ |
| dominantStellarPopulation | old stars ⓘ |
| effectiveRadius_ly | 3000 ⓘ |
| environment | inner halo of Andromeda Galaxy ⓘ |
| galaxyType | compact dwarf elliptical galaxy ⓘ |
| hasGlobularClusters | few ⓘ |
| hasNucleus | compact stellar nucleus ⓘ |
| hasSupermassiveBlackHole | true ⓘ |
| includedInCatalogue |
Messier Catalogue
NERFINISHED
ⓘ
New General Catalogue NERFINISHED ⓘ |
| isGravitationallyBoundTo | Andromeda Galaxy NERFINISHED ⓘ |
| isPrototypeOf | compact elliptical galaxies ⓘ |
| locatedInConstellation | Andromeda NERFINISHED ⓘ |
| mass_solar | 3×10^9 ⓘ |
| memberOf | Local Group NERFINISHED ⓘ |
| messierNumber | M32 NERFINISHED ⓘ |
| morphologicalType | cE2 ⓘ |
| nearbyObject |
Andromeda Galaxy
NERFINISHED
ⓘ
NGC 224 NERFINISHED ⓘ |
| observedInWavelength |
X-ray
ⓘ
infrared ⓘ optical ⓘ |
| radialVelocity_km_s | -205 ⓘ |
| redshift_z | -0.000670 ⓘ |
| rightAscension | 00h 42m 41.8s ⓘ |
| satelliteOf |
Andromeda Galaxy
NERFINISHED
ⓘ
M31 NERFINISHED ⓘ |
| starFormationActivity | low ⓘ |
| stellarMass_solar | (2–4)×10^9 ⓘ |
| surfaceBrightness | high ⓘ |
| visibleFromHemisphere | Northern Hemisphere NERFINISHED ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.