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{{Infobox galaxy
| name = [[New General Catalogue|NGC]] 147
| image = Caldwell_17_%2850290241446%29.jpg
| caption = [[Hubble Space Telescope]] image of NGC 147
| epoch = [[J2000]]
| type = dSph/dE5<ref name="ned">{{cite web
| title=NASA/IPAC Extragalactic Database
| work=Results for NGC 147
| url=http://nedwww.ipac.caltech.edu/
| access-date=2006-12-07
| archive-date=2000-10-19
| archive-url=https://web.archive.org/web/20001019032134/http://nedwww.ipac.caltech.edu/
| dead-url=no
}}</ref>
| ra = {{RA|00|33|12.1}}<ref name="ned" />
| dec = {{DEC|+48|30|32}}<ref name="ned" />
| dist_ly = 2.53 ± 0.11 [[light-year|Mly]] (780 ± 30 [[parsec|kpc]])<ref name="tonryetal2001">{{cite journal
| author=J. L. Tonry |display-authors=4 | author2=A. Dressler | author3=J. P. Blakeslee | author4=E. A. Ajhar | author5=A. B. Fletcher | author6=G. A. Luppino | author7=M. R. Metzger | author8=C. B. Moore
| title=The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances
| url=https://archive.org/details/sim_astrophysical-journal_2001-01-10_546_2/page/680 | journal=Astrophysical Journal
| date=2001
| volume=546
| issue=2
| pages=681–693
| bibcode=2001ApJ...546..681T
| doi=10.1086/318301 |arxiv = astro-ph/0011223 |s2cid=17628238 }}</ref><ref name="McConnachie2005">{{cite journal
| author=McConnachie, A. W. |display-authors=4 | author2=Irwin, M. J. | author3=Ferguson, A. M. N. | author4=Ibata, R. A. | author5=Lewis, G. F. | author6=Tanvir, N.
| title=Distances and metallicities for 17 Local Group galaxies
| journal=[[Monthly Notices of the Royal Astronomical Society]]
| date=2005
| volume=356
| issue=4
| pages=979–997
| bibcode=2005MNRAS.356..979M
| doi=10.1111/j.1365-2966.2004.08514.x |doi-access=free |arxiv = astro-ph/0410489 }}</ref> <ref name="Karachentsevetal2006">{{cite journal
| author=Karachentsev, I. D. | author2=Kashibadze, O. G.
| title=Masses of the local group and of the M81 group estimated from distortions in the local velocity field
| journal=Astrophysics
| date=2006
| volume=49
| issue=1
| pages=3–18
| bibcode=2006Ap.....49....3K
| doi=10.1007/s10511-006-0002-6 | s2cid=120973010
}}</ref>{{Ref label|A|a|none}}
| z = {{val|-193|3|u=km/[[second|s]]}}<ref name="ned" />
| appmag_v = 10.5<ref name="ned" />
| size_v = 13.2{{prime}} × 7.8{{prime}}<ref name="ned" />
| constellation name = [[仙后座]]
| notes = [[仙女座星系]]的[[衛星星系]]
| names = [[Principal Galaxies Catalogue|PGC]] 2004,<ref name="ned" /> [[Uppsala General Catalogue|UGC]] 326,<ref name="ned" /> [[大衛·鄧拉普天文台目錄|DDO]] 3,<ref name="ned" /> LEDA 2004, [[科德韋爾天體|Caldwell]] 17
}}
[[File:NGC 0147 DSS.jpg|thumb|250px|right|NGC 147]]
'''NGC 147'''（也稱為'''DDO 3'''、'''科德韋爾 17'''）是[[仙后座]]的一個[[矮橢球星系]]。[[星等]]為9.4，[[赤經]]為33分11.7秒，[[赤緯]]為48°30'26"。1829年9月8日，[[約翰·弗里德里希·威廉·赫歇爾]]發現NGC 147。

NGC 147是[[本星系群]]的成員，也是[[仙女座星系]]的[[衛星星系]]。它與附近的星系[[NGC 185]]（M31 的另一顆遙遠的衛星）形成一對<ref name="simbad">{{cite simbad
| title=NGC 147
| access-date=2006-12-07}}</ref>。NGC 147比用小型望遠鏡可見的NGC 185更難看到。在韋伯學會深空觀測者手冊中<ref name="Webb">{{cite book
| last = Jones
| first = K. G.
| title = Webb Society Deep-Sky Observer's Handbook
| publisher = Enslow Publishers
| date = 1981
| url = https://archive.org/details/webbsocietydeeps00kenn
| isbn = 978-0-89490-134-8
| url-access = registration
}}</ref>，NGC 147的視覺外觀描述如下：

大型，相當暗淡，呈現不規則[[圓形]]；中間部分明亮，形成星系核。

1944年，[[沃爾特·巴德]]利用位於[[洛杉磯]]附近的[[威爾遜山]]的100英寸（2.5 公尺）望遠鏡從NGC 147解析出單顆[[恆星]]，從而確認了NGC 147屬於本星系群。

== 參見 ==
* [[NGC天體列表]]

==參考資料==
{{Reflist}}

== 外部連結 ==
* [https://web.archive.org/web/20050829230615/http://www.seds.org/~spider/ngc/ngc_fr.cgi?147 NGC 147]
* http://simbad.u-strasbg.fr/sim-id.pl?Ident=NGC%20147

{{本星系群}}
{{科德韦尔天体}}
[[Category:仙后座NGC天体]]
[[Category:科德韦尔天体|17]]

NGC 147 - 版本历史

imported>Zestbot：​/* 外部連結 */ Bot：標準化Wikitext

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