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NGC 5643 - 版本历史
2026-07-17T21:21:12Z
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<p><b>新页面</b></p><div>{{Infobox galaxy<br />
| name = [[New General Catalogue|NGC]] 5643<br />
| image =NGC 5643.png<br />
| caption = [[哈伯太空望遠鏡]]所拍攝的NGC 5643<br />
| epoch = [[J2000]]<br />
| type = SAB(rs)c <ref name="ned">{{cite web<br />
| title=NASA/IPAC Extragalactic Database<br />
| work=Results for NGC 5643<br />
| url=http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+5643<br />
| access-date=2016-01-18<br />
| archive-date=2019-01-05<br />
| archive-url=https://web.archive.org/web/20190105125036/http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+5643<br />
| dead-url=no<br />
}}</ref><br />
| ra = {{RA|14|32|40.7}}<ref name="ned" /> <br />
| dec = {{DEC|-44|10|28}}<ref name="ned" /><br />
| dist_ly = {{cvt|12.5|Mpc|Mly|order=flip|lk=on}}<ref name=Hoyt>{{cite journal|doi=10.3847/1538-4357/abfe5a|title=The Carnegie Chicago Hubble Program X: Tip of the Red Giant Branch Distances to NGC 5643 and NGC 1404|year=2021|last1=Hoyt|first1=Taylor J.|last2=Beaton|first2=Rachael L.|last3=Freedman|first3=Wendy L.|last4=Jang|first4=In Sung|last5=Lee|first5=Myung Gyoon|last6=Madore|first6=Barry F.|last7=Monson|first7=Andrew J.|last8=Neeley|first8=Jillian R.|last9=Rich|first9=Jeffrey A.|last10=Seibert|first10=Mark|journal=The Astrophysical Journal|volume=915|issue=1|page=34|arxiv=2101.12232|bibcode=2021ApJ...915...34H|s2cid=231728270 |doi-access=free }}</ref><br />
| z = 1199 ± 2 [[kilometer|km]]/[[second|s]]<ref name="ned" /><br />
| appmag_v = 10.7<br />
| size_v = 4.6{{prime}} × 4.0{{prime}}<ref name="ned" /><br />
| constellation name = [[豺狼座]]<br />
| notes = <br />
| names = ESO 272- G 016, [[Morphological Catalogue of Galaxies|MCG]] -07-30-003, [[Principal Galaxies Catalogue|PGC]] 51969<ref name="ned" /><br />
}}<br />
<br />
'''NGC 5643'''是[[豺狼座]]中的一個中間[[螺旋星系]]。根據[[紅巨星支尖]]測量，NGC 5643距離[[地球]]約為4000萬[[光年]]<ref name=Hoyt/>。 NGC 5643擁有一個活躍的星系核，屬於II 型[[西佛星系]]。<br />
<br />
==歷史==<br />
1826年5月10日，[[詹姆士·敦洛普]]用他的9[[英寸]]反射[[望遠鏡]]首次發現了這個星系，他描述該星系極其微弱。該星系也被[[約翰·赫歇爾]]發現，並添加到[[星雲和星團總表]]中，編號為3572。NGC 5643與銀河平面距離僅15度<ref>{{cite book|last1=O'Meara|first1=Stephen James|title=Southern gems|date=2013|publisher=[[Cambridge University Press]]|location=Cambridge|isbn=978-1107015012|pages=272|ref=Meara}}</ref>。<br />
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== 參考資料 ==<br />
{{reflist}}<br />
<br />
{{Ngc60}}<br />
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<!-- location categories --><br />
[[Category:豺狼座]]<br />
<!-- type categories --><br />
<!-- catalogue categories --><br />
[[Category:NGC天體|5643]]</div>
imported>InternetArchiveBot