Ursa Major II Dwarf Galaxy
E483973
Ursa Major II Dwarf Galaxy is a faint, dark-matter-dominated dwarf spheroidal satellite galaxy orbiting the Milky Way in the constellation Ursa Major.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
dark-matter-dominated galaxy
ⓘ
dwarf spheroidal galaxy ⓘ satellite galaxy ⓘ ultra-faint dwarf galaxy ⓘ |
| absoluteMagnitude_V_approx | −4.2 ⓘ |
| alternativeName |
UMa II dSph
NERFINISHED
ⓘ
Ursa Major II ultra-faint dwarf NERFINISHED ⓘ |
| apparentMagnitude_V_approx | about 14 ⓘ |
| belongsTo | Galactic halo ⓘ |
| constellation | Ursa Major NERFINISHED ⓘ |
| contains |
horizontal branch stars
ⓘ
old red giant branch stars ⓘ |
| currentStarFormation | none detected ⓘ |
| darkMatterDominated | true ⓘ |
| declination_approx | +63° ⓘ |
| discoveredBy |
Beth Willman
NERFINISHED
ⓘ
collaborators in the Sloan Digital Sky Survey ⓘ |
| discoveryMethod | Sloan Digital Sky Survey data analysis ⓘ |
| discoveryYear | 2006 ⓘ |
| distanceFromEarth_approx |
30 kiloparsecs
ⓘ
about 100000 light-years ⓘ |
| dominantStellarPopulationAge | older than 10 billion years ⓘ |
| environment | outer halo of the Milky Way ⓘ |
| galaxyType | dwarf spheroidal ⓘ |
| gasContent | gas-poor ⓘ |
| halfLightRadius_approx | about 150 parsecs ⓘ |
| hostGalaxy | Milky Way NERFINISHED ⓘ |
| isFaint | true ⓘ |
| isResolvedIntoStars | true ⓘ |
| luminosityClass | ultra-faint ⓘ |
| massToLightRatio_high | true ⓘ |
| massToLightRatio_V_approx | several hundred solar units ⓘ |
| memberOf |
Local Group
NERFINISHED
ⓘ
Milky Way satellite system NERFINISHED ⓘ |
| metallicity_approx | [Fe/H] ≈ −2.0 ⓘ |
| MilkyWayHemisphere | northern sky ⓘ |
| morphologicalType | dSph ⓘ |
| namedAfter | constellation Ursa Major NERFINISHED ⓘ |
| radialVelocity_approx | −116 km/s ⓘ |
| researchUse |
probe of dark matter on small scales
ⓘ
test of galaxy formation in low-mass halos ⓘ |
| rightAscension_approx | 08h 51m ⓘ |
| satelliteOf | Milky Way NERFINISHED ⓘ |
| stellarPopulation |
metal-poor
ⓘ
old ⓘ |
| surfaceBrightness | very low ⓘ |
| tidalInteractionWithMilkyWay | likely ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.