And XX
E559337
And XX is an alternative designation for the variable star Andromeda XX, located in the constellation Andromeda.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Local Group galaxy
ⓘ
dwarf spheroidal galaxy ⓘ |
| absoluteMagnitudeV | approximately −6.3 ⓘ |
| alternativeName |
And XX dSph
NERFINISHED
ⓘ
Andromeda XX NERFINISHED ⓘ |
| apparentMagnitudeV | approximately 17.0 ⓘ |
| belongsTo | population of faint M31 dwarf spheroidals ⓘ |
| celestialCategory | galaxy ⓘ |
| coordinateSystem | equatorial ⓘ |
| darkMatterDominated | yes ⓘ |
| declination | +35° (approximate) ⓘ |
| discoveredBy |
M. J. Irwin
NERFINISHED
ⓘ
T. S. Chapman NERFINISHED ⓘ collaborators ⓘ |
| discoveryMethod | analysis of wide-field imaging surveys ⓘ |
| discoveryYear | 2011 ⓘ |
| distanceFromAndromedaGalaxy | approximately 130 kiloparsecs ⓘ |
| distanceFromEarth | approximately 800 kiloparsecs ⓘ |
| galacticEnvironment | halo of the Andromeda Galaxy ⓘ |
| gasContent | gas-poor ⓘ |
| gasRich | no ⓘ |
| halfLightRadius | approximately 100 parsecs ⓘ |
| hasGlobularClusters | none known ⓘ |
| hasStarFormationActivity | negligible ⓘ |
| hostGalaxy | Andromeda Galaxy NERFINISHED ⓘ |
| hostSystem | M31 satellite system NERFINISHED ⓘ |
| isGravitationallyBoundTo | Andromeda Galaxy NERFINISHED ⓘ |
| isPartOf | Andromeda subgroup of Local Group NERFINISHED ⓘ |
| isResolvedIntoStars | yes ⓘ |
| isUltraFaintDwarf | yes ⓘ |
| locatedInConstellation | Andromeda NERFINISHED ⓘ |
| luminosityClass | low-luminosity dwarf galaxy ⓘ |
| memberOf | Local Group NERFINISHED ⓘ |
| metallicity | low ⓘ |
| morphologicalType | dSph ⓘ |
| observedIn |
near-infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| observedWith |
Canada-France-Hawaii Telescope
NERFINISHED
ⓘ
Subaru Telescope NERFINISHED ⓘ other ground-based telescopes ⓘ |
| redshift | approximately 0 ⓘ |
| rightAscension | 00h 07m (approximate) ⓘ |
| satelliteOf | Andromeda Galaxy NERFINISHED ⓘ |
| skyLocation | northern celestial hemisphere ⓘ |
| stellarPopulation | old, metal-poor stars ⓘ |
| surfaceBrightness | very low ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.