Caldwell 57

E581398

Caldwell 57 is a dwarf irregular galaxy in the Local Group, better known as Barnard's Galaxy (NGC 6822), located in the constellation Sagittarius.

All labels observed (1)

Label Occurrences
Caldwell 57 canonical 2

How this entity was disambiguated

Statements (41)

Predicate Object
instanceOf dwarf irregular galaxy ⓘ
alsoKnownAs Barnard's Galaxy ⓘ
IC 4895 ⓘ
NGC 6822 ⓘ
angularSize 15.5 × 13.5 arcminutes ⓘ
apparentMagnitudeV 9.3 ⓘ
catalog Caldwell catalogue ⓘ
Index Catalogue ⓘ
New General Catalogue ⓘ
contains Cepheid variable stars ⓘ
H II regions ⓘ
planetary nebulae ⓘ
young star clusters ⓘ
declination −14° 48′ 12″ ⓘ
discoveredBy Edward Emerson Barnard ⓘ
discoveryYear 1884 ⓘ
distanceFromEarth about 1.6 million light-years ⓘ
about 500 kiloparsecs ⓘ
galacticLatitude −18.4° ⓘ
galacticLongitude 25.3° ⓘ
gasContent rich in neutral hydrogen (H I) ⓘ
hasNotableRegion Hubble V ⓘ
Hubble X ⓘ
hasStarFormation ongoing ⓘ
hasStellarPopulation Population I stars ⓘ
linked to: Population I

Population II stars ⓘ
is one of the nearest dwarf irregular galaxies outside the Milky Way ⓘ
locatedInConstellation Sagittarius ⓘ
mass about 1×10^9 solar masses ⓘ
memberOf Local Group ⓘ
metallicity low ⓘ
morphologicalType IB(s)m ⓘ
namedAfter Edward Emerson Barnard ⓘ
observedWith Hubble Space Telescope ⓘ
Very Large Telescope ⓘ
orientation seen nearly face-on ⓘ
radialVelocity −57 km/s ⓘ
redshift z = −0.000191 ⓘ
rightAscension 19h 44m 57s ⓘ
surfaceBrightness low ⓘ
usedFor calibration of the cosmic distance scale ⓘ

How these facts were elicited

Referenced by (2)

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

Barnard's Galaxy → alsoKnownAs → Caldwell 57 ⓘ
Barnard's Galaxy → catalogCode → Caldwell 57 ⓘ