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gptkbp:instanceOf
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gptkb:galaxy
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gptkbp:alternativeName
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gptkb:Fireworks_Galaxy
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gptkbp:apparentMagnitude
|
9.6
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gptkbp:apparentSize
|
11.5′ × 9.8′
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gptkbp:catalogue
|
gptkb:New_General_Catalogue
gptkb:Caldwell_12
gptkb:PGC_65001
gptkb:UGC_11597
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gptkbp:constellation
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gptkb:Cygnus
gptkb:Cepheus
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gptkbp:declination
|
+60° 09′ 14″
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gptkbp:diameter
|
~40,000 light-years
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gptkbp:discoveredBy
|
gptkb:William_Herschel
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gptkbp:discoveredIn
|
September 9, 1798
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gptkbp:distanceFromEarth
|
22 million light-years
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gptkbp:epoch
|
gptkb:J2000
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gptkbp:galaxyType
|
intermediate spiral galaxy
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gptkbp:groupCluster
|
gptkb:NGC_6946_Group
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gptkbp:hasSupernova
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gptkb:SN_1917A
gptkb:SN_1939C
gptkb:SN_1948B
gptkb:SN_1968D
gptkb:SN_1969P
gptkb:SN_1980K
gptkb:SN_2002hh
gptkb:SN_2004et
gptkb:SN_2008S
gptkb:SN_2017eaw
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
NGC 6946
|
|
gptkbp:locatedIn
|
Local Group (near edge)
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gptkbp:locatedNear
|
gptkb:Milky_Way
|
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gptkbp:luminosity
|
14.1 mag/arcmin²
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gptkbp:morphologicalType
|
SAB(rs)cd
|
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gptkbp:NGCNumber
|
6946
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gptkbp:notableFor
|
active star formation
high rate of supernovae
rich in gas and dust
|
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gptkbp:numberOfObservedSupernovae
|
10
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gptkbp:radialVelocity
|
48 km/s
|
|
gptkbp:redshift
|
0.000133
|
|
gptkbp:rightAscension
|
20h 34m 52.3s
|
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gptkbp:bfsParent
|
gptkb:Local_Group
gptkb:NGC_Catalogue
gptkb:Cepheus
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gptkbp:bfsLayer
|
6
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