Ursa Minor dSph

E539931

Ursa Minor dSph is a faint dwarf spheroidal satellite galaxy of the Milky Way located in the constellation Ursa Minor.

All labels observed (1)

Label Occurrences
Ursa Minor dSph canonical 1

How this entity was disambiguated

Statements (45)

Predicate Object
instanceOf dwarf spheroidal galaxy
absoluteMagnitudeV about −8.8
alternativeName PGC 54074
UGC 9749
Ursa Minor Dwarf
apparentMagnitudeV about 10.9
belongsTo Milky Way satellite system
contains RR Lyrae variables
horizontal branch stars
red giant branch stars
coordinateSystem equatorial
darkMatterContent dark-matter-dominated
declination +67° 13′
discoveredBy A. G. Wilson
discoveredUsing Palomar Observatory Sky Survey
discoveryYear 1954
distanceFromEarth ~215,000 light-years
~66 kpc
dominantStellarPopulationAge >10 Gyr
environment Galactic halo
galaxyType dSph
gasContent gas-poor
gasPhaseStarFormation absent
halfLightRadius ~300 pc
hasGlobularClusters false
hasNucleus false
isFaint true
isResolvedIntoStars true
locatedIn Ursa Minor constellation region of the sky
locatedInConstellation Ursa Minor
memberOf Local Group
metallicity very metal-poor
morphologicalType dE3
observationalChallenge low surface brightness
observedIn infrared wavelengths
optical wavelengths
orbitalRelationToMilkyWay bound satellite
radialVelocity about −247 km/s
rightAscension 15h 09m
satelliteOf Milky Way
shape elongated
starFormationActivity quiescent
stellarKinematics pressure-supported
stellarPopulation old
surfaceBrightness very low

How these facts were elicited

Referenced by (1)

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

Ursa Minor Dwarf Galaxy alternativeName Ursa Minor dSph