|
gptkbp:instanceOf
|
gptkb:galaxy
|
|
gptkbp:alsoKnownAs
|
gptkb:Messier_101
gptkb:M101
|
|
gptkbp:apparentMagnitude
|
7.86
|
|
gptkbp:catalogueNumber
|
gptkb:NGC_5457
gptkb:PGC_50063
gptkb:UGC_8981
|
|
gptkbp:constellation
|
gptkb:Ursa_Major
|
|
gptkbp:declination
|
+54° 20′ 57″
|
|
gptkbp:diameter
|
170,000 light-years
|
|
gptkbp:discoveredBy
|
gptkb:Pierre_Méchain
|
|
gptkbp:discoveredIn
|
March 27, 1781
|
|
gptkbp:distanceFromEarth
|
21 million light-years
|
|
gptkbp:featuredIn
|
gptkb:Principal_Galaxies_Catalogue
gptkb:Uppsala_General_Catalogue
gptkb:Messier_Catalogue
gptkb:New_General_Catalogue
|
|
gptkbp:galaxyType
|
Sc (spiral galaxy)
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Pinwheel Galaxy
|
|
gptkbp:HubbleType
|
SAB(rs)cd
|
|
gptkbp:inclination
|
18°
|
|
gptkbp:location
|
gptkb:Ursa_Major_constellation
|
|
gptkbp:luminosity
|
low
|
|
gptkbp:mass
|
~100 billion solar masses
|
|
gptkbp:metallicity
|
gradient from center to edge
|
|
gptkbp:notableCompanion
|
gptkb:Holmberg_IV
gptkb:NGC_5204
gptkb:NGC_5474
gptkb:NGC_5477
gptkb:NGC_5585
|
|
gptkbp:notableFeature
|
asymmetric structure
large H II regions
prominent spiral arms
|
|
gptkbp:notableFor
|
gptkb:Hubble_Space_Telescope
|
|
gptkbp:partOf
|
gptkb:M101_Group
|
|
gptkbp:rating
|
~1 trillion
|
|
gptkbp:redshift
|
0.000804
|
|
gptkbp:rightAscension
|
14h 03m 12.6s
|
|
gptkbp:starFormationRate
|
high
|
|
gptkbp:supernovaeObserved
|
gptkb:SN_1909A
gptkb:SN_1951H
gptkb:SN_1970G
gptkb:SN_2011fe
|
|
gptkbp:visibleToNakedEye
|
with binoculars or small telescope
|
|
gptkbp:bfsParent
|
gptkb:The_Great_Bear
|
|
gptkbp:bfsLayer
|
6
|