DDO 53

E450575

DDO 53 is a faint dwarf irregular galaxy that is a member of the nearby M81 Group in the constellation Ursa Major.

All labels observed (1)

Label Occurrences
DDO 53 canonical 1

How this entity was disambiguated

Statements (42)

Predicate Object
instanceOf dwarf irregular galaxy
galaxy
apparentMagnitudeV 14.7
barred no
belongsTo nearby M81 Group of galaxies
catalog DDO
PGC
UGC
constellation Ursa Major
declination +66° 10′ 54″
discoveredBy Sidney van den Bergh
discoveryProgram David Dunlap Observatory survey
distanceFromEarth 3.6 megaparsecs
about 11.7 million light-years
environment group galaxy
galaxyGroup M81 Group
gasContent gas-rich
hasDarkMatterDominance yes
hasHIIRegions yes
hasIrregularMorphology yes
hasStarFormation yes
HIContent extended neutral hydrogen envelope
isFaint yes
isNearbyGalaxy yes
isResolvedIntoStars yes
locatedIn Ursa Major
memberOf M81 Group
metallicity low-metallicity
morphologicalType Im
namedAfter David Dunlap Observatory catalog
observedIn optical wavelengths
radio wavelengths
otherDesignation PGC 21396
UGC 4459
VII Zw 189
partOf Local Volume
radialVelocity 142 km/s
redshift 0.000474
rightAscension 08h 34m 07s
spiralStructure none
stellarPopulation dominated by young and intermediate-age stars
surfaceBrightness low

How these facts were elicited

Referenced by (1)

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

M81 Group containsGalaxy DDO 53