|
gptkbp:instanceOf
|
gptkb:galaxy
|
|
gptkbp:alsoKnownAs
|
gptkb:M51
gptkb:Messier_51
gptkb:NGC_5194
|
|
gptkbp:angularSize
|
11.2 × 6.9 arcminutes
|
|
gptkbp:apparentMagnitude
|
8.4
|
|
gptkbp:bestViewedIn
|
gptkb:spring
|
|
gptkbp:cataloguedIn
|
gptkb:Messier_Catalogue
gptkb:New_General_Catalogue
|
|
gptkbp:declination
|
+47° 11′ 43″
|
|
gptkbp:diameter
|
about 76,000 light-years
|
|
gptkbp:discoveredBy
|
gptkb:Charles_Messier
|
|
gptkbp:discoveredIn
|
1773
|
|
gptkbp:distanceFromEarth
|
about 23 million light-years
|
|
gptkbp:hasActiveNucleus
|
yes
|
|
gptkbp:hasCompanion
|
gptkb:NGC_5195
|
|
gptkbp:hasViewOf
|
gptkb:Northern_Hemisphere
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Whirlpool Galaxy
|
|
gptkbp:locatedIn
|
constellation Canes Venatici
|
|
gptkbp:mass
|
about 160 billion solar masses
|
|
gptkbp:morphologicalType
|
SA(s)bc pec
|
|
gptkbp:notableFor
|
interaction with NGC 5195
prominent spiral structure
|
|
gptkbp:partOf
|
gptkb:M51_Group
|
|
gptkbp:photographed
|
gptkb:Hubble_Space_Telescope
|
|
gptkbp:redshift
|
0.001544
|
|
gptkbp:rightAscension
|
13h 29m 52.7s
|
|
gptkbp:supernovaeObserved
|
gptkb:SN_1994I
gptkb:SN_2005cs
gptkb:SN_2011dh
|
|
gptkbp:bfsParent
|
gptkb:M51
|
|
gptkbp:bfsLayer
|
5
|