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NGC 1647 - 版本历史
2026-07-19T11:07:30Z
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<p><b>新页面</b></p><div>{{Infobox cluster<br />
| name = NGC 1647<br />
| image = (palle)NGC 1647.jpg<br />
| caption =<br />
| credit =<br />
| type = [[疏散星團]]<br />
| epoch = [[曆元#儒略年和J2000|J2000]]<br />
| constellation = [[金牛座]]<br />
| ra = {{RA|04|45|55}}<ref name="simbad"><br />
{{cite simbad<br />
| title=NGC 1647<br />
| accessdate=2015-06-19<br />
}}</ref><br />
| dec = {{DEC|±19|06|54}}<ref name="simbad"/><br />
| dist_ly = 1,800 [[光年]] （平均）<br />
| dist_pc = 550 [[秒差距]]<ref name=guerrero2011>{{cite journal|author=C. A. Guerrero|author2=J. H. Peña|author3=J. P. Sareyan|title=uvby-B Photoelectric Photometry of the Open Clusters NGC 1647 and NGC 1778|journal=Revista Mexicana de Astronomía y Astrofísica|date=2011|volume=47|issue=1|pages=185–192|url=http://www.redalyc.org/articulo.oa?id=57119922013|access-date=19 June 2015|bibcode=2011RMxAA..47..185G|archive-date=2022-06-21|archive-url=https://web.archive.org/web/20220621043336/https://www.redalyc.org/articulo.oa?id=57119922013|dead-url=no}}</ref><br />
| appmag_v = 6.4 <ref name="simbad"/><br />
| size_v = 45'<br />
| mass_msol =<br />
| age =<br />
| notes =<br />
| names = [[科林德目錄|Cr]] 54<br />
}}<br />
<br />
'''NGC 1647'''是在[[金牛座]]的一個[[疏散星團]]，它擁有大約90顆恆星，與我們的距離為550[[秒差距]]<ref name=guerrero2011/>。當使用[[雙筒望遠鏡]]觀察[[畢宿五]]時，就能看見它。它是由[[威廉·赫歇爾]]於1784年發現的<ref>[http://www.ngcicproject.org/ngcicdb.asp NGC/IC online - result for NGC 1647] {{webarchive|url=https://web.archive.org/web/20120520010558/http://www.ngcicproject.org/ngcicdb.asp |date=2012-05-20 }}</ref>。它位於金牛座暗星雲複合體的後面，兩者相距大約160秒差距。估計這個星團的年齡為1.5億年，最亮的恆星光譜型B7的[[主序星]]<ref>{{cite journal|display-authors=6|author=Zdanavičius, J.|author2=Straižys, V.|author3=Chen, C. W.|author4=Chen, W. P.|author5=Zdanavičius, K.|author6=Kazlauskas, A.|author7=Černis, K.|author8=Philip, A. G. D.|author9=Boyle, R. P.|author10=Tautvaišienė, G.|title=Seven-Color Photometry of the Open Cluster NGC 1647 Area|journal=Baltic Astronomy|date=2005|volume=14|pages=179–203|bibcode = 2005BaltA..14..179Z }}</ref>。<br />
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== 參考資料 ==<br />
{{reflist}}<br />
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== 外部連結 ==<br />
* {{commonscat-inline}}<br />
<br />
{{Ngc20}}<br />
<br />
[[Category:NGC天體|1647]]<br />
[[Category:金牛座]]<br />
[[Category:疏散星團]]</div>
imported>InternetArchiveBot