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{{Infobox Galaxy
| name = [[New General Catalogue|NGC]] 5474
| image = [[File:NGC 5474 I FUV g2006.jpg|300px]]
|caption = 由[[星系演化探測器]]拍攝的NGC 5474[[紫外線]]影像。
| credit= GALEX/[[NASA]].
| epoch = [[J2000]]
| constellation name = [[大熊座]]<ref name="sinnott1988">{{cite book
| author=R. W. Sinnott, editor
| title= The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer
| url=https://archive.org/details/ngc20000complete0000drey
| year=1988
| publisher=Sky Publishing Corporation and Cambridge University Press
| isbn=0-933-34651-4}}</ref>
| ra = {{RA|14|05|01.6}}<ref name="ned">{{cite web
| title=NASA/IPAC Extragalactic Database
| work=Results for NGC 5474
| url=http://nedwww.ipac.caltech.edu/
| accessdate=2006-09-20
| archive-date=2011-05-14
| archive-url=https://web.archive.org/web/20110514100451/http://nedwww.ipac.caltech.edu/
| dead-url=no
}}</ref>
| dec ={{DEC|+53|39|44}}<ref name="ned" />
| z = 273 ± 9 [[千米]]/秒<ref name="ned" />
| dist_ly = 22 [[光年|百万光年]] (6.8 [[秒差距|百万秒差距]])<ref name="drozdovskykarachentsv2000" />
| type = SA(s)cd pec<ref name="ned" />
| appmag_v = 11.3<ref name="ned" />
| size_v = 4′.8 × 4′.3<ref name="ned" />
| names = [[Uppsala General Catalogue|UGC]] 9013,<ref name="ned" /> [[Principal Galaxies Catalogue|PGC]] 50216<ref name="ned" />
}}

'''NGC 5474'''是位於[[大熊座]]的一個[[特殊星系|特殊]][[矮星系]]，它是[[宏觀螺旋星系]]——[[風車星系]]（M101）的伴星系之一，距地球約2100萬光年<ref name="carnegieatlas" >{{cite book
| author=A. Sandage, J. Bedke
| year=1994
| title=Carnegie Atlas of Galaxies
| edition=
| publisher=Carnegie Institution of Washington
| location=Washington, D.C.
| isbn=0-87279-667-1 }}</ref><ref name="drozdovskykarachentsv2000">{{cite journal
| author=Drozdovsky, I. O.; Karachentsev, I. D.
| title=Photometric distances to six bright resolved galaxies
| journal=Astronomy and Astrophysics Supplement
| year=2000
| volume=142
| pages=425–432
| url=http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2000A%26AS..142..425D
| doi=10.1051/aas:2000155 }}</ref>。
在風車星系的伴星系中，他是最接近風車星系本身的一個<ref name="drozdovskykarachentsv2000" />。NGC 5474和風車星系間的交互作用使星系產生強烈的變形，星系盤相對於[[核球 (星系)|星系核心]]被偏移了<ref name="drozdovskykarachentsv2000" /><ref name="gonzalezdelgadoetal1997">{{cite journal
| author=R. M. Gonzalez Delgado, E. Perez, C. Tadhunter J. M. Vilchez, J. M. Rodriguez-Espinosa
| title=H II Region Population in a Sample of Nearby Galaxies with Nuclear Activity. I. Data and General Results
| journal=Astrophysical Journal Supplement
| year=2000
| volume=108
| pages=155
| url=http://adsabs.harvard.edu/abs/1997ApJS..108..155G
| doi=10.1086/312951
| access-date=2009-04-08
| archive-date=2019-09-30
| archive-url=https://web.archive.org/web/20190930163725/http://adsabs.harvard.edu/abs/1997ApJS..108..155G
}}</ref>。恆星的形成（追蹤[[氫]][[譜線]]中的發射線）也偏離核心<ref name="gonzalezdelgadoetal1997" />，NGC 5474顯示出一些螺旋結構的特徵，結果是這個星系經常被分類為[[矮螺旋星系]]，是一種相對來說相當罕見的矮星系。

== 參考資料 ==

{{reflist}}

{{Catalogs|NGC=5474}}

[[Category:螺旋星系]]
[[Category:無棒螺旋星系]]
[[Category:矮星系]]
[[Category:矮螺旋星系]]
[[Category:特殊星系]]
[[Category:交互作用星系]]
[[Category:M101星系群]]
[[Category:大熊座]]
[[Category:NGC天體|5474]]
[[Category:UGC天體|09013]]
[[Category:PGC天體|50216]]

NGC 5474 - 版本历史

imported>InternetArchiveBot：​补救1个来源，并将0个来源标记为失效。) #IABot (v2.0.8.7

imported>InternetArchiveBot：补救1个来源，并将0个来源标记为失效。) #IABot (v2.0.8.7