Andromeda II

E103069

Andromeda II is a dwarf spheroidal satellite galaxy of the Andromeda Galaxy (M31) located within the Local Group.

All labels observed (1)

Label Occurrences
Andromeda II canonical 5

How this entity was disambiguated

Statements (46)

Predicate Object
instanceOf Local Group galaxy
dwarf spheroidal galaxy
satellite galaxy
absoluteMagnitudeV about −12.6
alternateName And II
Andromeda Dwarf II
apparentMagnitudeV about 14.5
belongsTo Andromeda subgroup
surface form: Andromeda subgroup of the Local Group
catalogDesignation And II
clusterMembership none (field dwarf in M31 halo)
contains red giant branch stars
coordinateSystem equatorial
darkMatterContent dark-matter-dominated
declination +33° 26′
discoveredBy Sidney van den Bergh
discoveryMethod photographic plates
discoveryYear 1970
distanceFromAndromedaGalaxy about 185,000 light-years
distanceFromEarth about 2.2 million light-years
environment satellite system of M31
galaxyType dwarf spheroidal galaxy
gasContent very low neutral gas content
halfLightRadius about 1.1 kiloparsecs
has intermediate-age stellar population
no significant current star formation
old metal-poor stars
hostGalaxy Andromeda Galaxy
locatedIn Local Group
constellation Andromeda
luminosityV on the order of 10^7 solar luminosities
massToLightRatio high
memberOf Local Group
metallicity low
observedIn near-infrared wavelengths
optical wavelengths
orbitsWithin halo of the Andromeda Galaxy
radialVelocity about −188 km/s
rightAscension about 01h 16m
satelliteOf Andromeda Galaxy
Andromeda Galaxy
surface form: M31
shape spheroidal
shows evidence of multiple stellar populations
evidence of past merger event
stellarMass on the order of 10^7 solar masses
stellarPopulation old
surfaceBrightness low

How these facts were elicited

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

Local Group contains Andromeda II
LG containsGalaxy Andromeda II
NGC 224 hasSatelliteGalaxy Andromeda II
Andromeda subgroup hasMember Andromeda II
Andromeda XXX sharesHostGalaxyWith Andromeda II