Holmberg IX
E450572
Holmberg IX is a small irregular dwarf galaxy and one of the nearest known satellite galaxies of the spiral galaxy Messier 81 (M81).
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
galaxy ⓘ irregular dwarf galaxy ⓘ satellite galaxy ⓘ |
| apparentMagnitudeV | approximately 16.5 ⓘ |
| associatedWith |
tidal interactions between M81 and M82
ⓘ
tidal interactions between M81 and NGC 3077 ⓘ |
| belongsTo | nearby galaxies catalogues ⓘ |
| contains |
H II regions
ⓘ
massive stars ⓘ neutral hydrogen gas ⓘ young stellar populations ⓘ |
| declination | +69° 02′ (approximate) ⓘ |
| discoveredBy | Erik Holmberg NERFINISHED ⓘ |
| distanceFromEarth |
approximately 1.1 megaparsecs
ⓘ
approximately 3.6 million light-years ⓘ |
| environment | interacting galaxy system around M81 ⓘ |
| epoch | J2000 ⓘ |
| galaxyType | dwarf irregular galaxy ⓘ |
| hasAlternativeName |
DDO 66
NERFINISHED
ⓘ
KDG 61 (sometimes associated) ⓘ UGC 5336 NERFINISHED ⓘ |
| hasStarClusterPopulation | yes ⓘ |
| hasStarFormation | yes ⓘ |
| isGasRich | yes ⓘ |
| isGravitationallyBoundTo | Messier 81 NERFINISHED ⓘ |
| isNearbyTo |
Messier 82
NERFINISHED
ⓘ
NGC 3077 NERFINISHED ⓘ |
| isOneOf | nearest known satellite galaxies of Messier 81 ⓘ |
| likelyOrigin | tidal dwarf galaxy candidate ⓘ |
| locatedIn |
constellation Ursa Major
ⓘ
local volume of the Universe ⓘ |
| memberOf | M81 Group NERFINISHED ⓘ |
| metallicity | low metallicity galaxy ⓘ |
| morphologicalType | Im ⓘ |
| namedAfter | Erik Holmberg NERFINISHED ⓘ |
| observedBy |
Hubble Space Telescope
NERFINISHED
ⓘ
Very Large Array NERFINISHED ⓘ |
| observedIn |
optical wavelengths
ⓘ
radio wavelengths ⓘ ultraviolet wavelengths ⓘ |
| partOf | M81 Group NERFINISHED ⓘ |
| radialVelocity | approximately 46 kilometers per second ⓘ |
| redshift | approximately 0.000158 ⓘ |
| rightAscension | 09h 57m (approximate) ⓘ |
| satelliteOf | Messier 81 NERFINISHED ⓘ |
| stellarPopulationAge | predominantly young ⓘ |
| surfaceBrightness | low surface brightness galaxy ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.