Lihat sumber Westerlund 1-26

{{Starbox begin
| name = Westerlund&nbsp;1-26
}}
{{Starbox image
| image=[[Berkas:Surprise Cloud Around Vast Star-inset.png|300px]]
| caption=Lokasi Westerlund 1 yang terletak di gugus bintang [[Westerlund 1]] dengan inset dan nebula hidrogen yang teriniosasi disekitarnya. 
| credit=[[European Southern Observatory|ESO]]
}}
{{Starbox observe
| epoch= J2000
| equinox= J2000
| constell = [[Ara (constellation)|Ara]]
| ra = {{RA|16|47|05.403}}<ref name=2mass>{{cite journal|bibcode=2003yCat.2246....0C|title=VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)|journal=VizieR On-line Data Catalog: II/246.  Originally Published in: 2003yCat.2246....0C|volume=2246|pages=0|author1=Cutri|first1=R. M.|last2=Skrutskie|first2=M. F.|last3=Van Dyk|first3=S.|last4=Beichman|first4=C. A.|last5=Carpenter|first5=J. M.|last6=Chester|first6=T.|last7=Cambresy|first7=L.|last8=Evans|first8=T.|last9=Fowler|first9=J.|last10=Gizis|first10=J.|last11=Howard|first11=E.|last12=Huchra|first12=J.|last13=Jarrett|first13=T.|last14=Kopan|first14=E. L.|last15=Kirkpatrick|first15=J. D.|last16=Light|first16=R. M.|last17=Marsh|first17=K. A.|last18=McCallon|first18=H.|last19=Schneider|first19=S.|last20=Stiening|first20=R.|last21=Sykes|first21=M.|last22=Weinberg|first22=M.|last23=Wheaton|first23=W. A.|last24=Wheelock|first24=S.|last25=Zacarias|first25=N.|year=2003}}</ref>
| dec = {{DEC|-45|50|36.76}}<ref name=2mass/>
| appmag_v=17.194<ref name=lim>{{cite journal|bibcode=2013AJ....145...46L|title=The Starburst Cluster Westerlund 1: The Initial Mass Function and Mass Segregation|journal=The Astronomical Journal|volume=145|issue=2|pages=46|author1=Lim|first1=Beomdu|last2=Chun|first2=Moo-Young|last3=Sung|first3=Hwankyung|last4=Park|first4=Byeong-Gon|last5=Lee|first5=Jae-Joon|last6=Sohn|first6=Sangmo T.|last7=Hur|first7=Hyeonoh|last8=Bessell|first8=Michael S.|year=2013|doi=10.1088/0004-6256/145/2/46|arxiv = 1211.5832 }}</ref>
}}
{{Starbox character
| class = M2-M6Ia<ref name=clark2011>{{cite journal|doi=10.1051/0004-6361/201116990|title=A VLT/FLAMES survey for massive binaries in Westerlund 1|journal=Astronomy & Astrophysics|volume=531|pages=A28|year=2011|last1=Clark|first1=J. S.|last2=Ritchie|first2=B. W.|last3=Negueruela|first3=I.|last4=Crowther|first4=P. A.|last5=Damineli|first5=A.|last6=Jablonski|first6=F. J.|last7=Langer|first7=N.|bibcode=2011A&A...531A..28C|arxiv = 1105.0776 |url=http://oro.open.ac.uk/30687/1/1105.0776v1.pdf}}</ref>
| appmag_1_passband = B
| appmag_1 = 22.1<ref name=clark2005>{{cite journal|bibcode=2005A&A...434..949C|title=On the massive stellar population of the super star cluster Westerlund 1|journal=Astronomy and Astrophysics|volume=434|issue=3|pages=949|author1=Clark|first1=J. S.|last2=Negueruela|first2=I.|last3=Crowther|first3=P. A.|last4=Goodwin|first4=S. P.|year=2005|doi=10.1051/0004-6361:20042413|arxiv = astro-ph/0504342 }}</ref>
| appmag_2_passband = J
| appmag_2 = 4.31<ref name=2mass/>
| appmag_3_passband = H
| appmag_3 = 1.35<ref name=2mass/>
| appmag_4_passband = K
| appmag_4 = 1.9<ref name=piatti>{{cite journal|bibcode=1998A&AS..127..423P|title=Fundamental parameters of the highly reddened young open clusters Westerlund 1 and 2|journal=Astronomy and Astrophysics Supplement|volume=127|issue=3|pages=423|author1=Piatti|first1=A. E.|last2=Bica|first2=E.|last3=Claria|first3=J. J.|year=1998|doi=10.1051/aas:1998111}}</ref>
| b-v = +5.000<ref name=lim/>
| u-b = −7.445<ref name=lim/>
}}
{{Starbox astrometry
| prop_mo_ra = {{val|-0.910|0.608}}<ref name=dr2/>
| prop_mo_dec = {{val|-4.481|0.582}}<ref name=dr2/>
| parallax = 0.6798
| p_error = 0.2455
| parallax_footnote = <ref name=dr2>{{cite DR2|5940106041452150272}}</ref>
| dist_ly = 11,500
| dist_pc = 3,550<ref name=wright/>
}}
{{Starbox detail
| radius = 1,530 - 1,580,<ref name=wright>{{cite journal|last1=Wright|first1=N. J.|last2=Wesson|first2=R.|last3=Drew|first3=J. E.|last4=Barentsen|first4=G.|last5=Barlow|first5=M. J.|last6=Walsh|first6=J. R.|last7=Zijlstra|first7=A.|last8=Drake|first8=J. J.|last9=Eisloffel|first9=J.|last10=Farnhill|first10=H. J.|title=The ionized nebula surrounding the red supergiant W26 in Westerlund 1|journal=Monthly Notices of the Royal Astronomical Society: Letters|date=16 October 2013|volume=437|issue=1|pages=L1–L5|doi=10.1093/mnrasl/slt127|arxiv = 1309.4086 |bibcode = 2014MNRAS.437L...1W }}</ref> {{nowrap|2,550<ref name=fok/>{{efn | name=radius2 | Applying the [[Stefan-Boltzmann Law]] with a nominal [[sun|solar]] [[effective temperature]] of 5,772&nbsp;[[Kelvin|K]]: <math>\sqrt{(5772/3700)^4 * 1,100,000} = 2552.38\ R\odot</math>}}
}}
| temperature = 3,600<ref name=mackey>{{cite journal|arxiv=1508.07003|doi=10.1051/0004-6361/201526159|title=Cold gas in hot star clusters: The wind from the red supergiant W26 in Westerlund 1|journal=Astronomy & Astrophysics|volume=582|pages=A24|year=2015|last1=MacKey|first1=Jonathan|last2=Castro|first2=Norberto|last3=Fossati|first3=Luca|last4=Langer|first4=Norbert|bibcode=2015A&A...582A..24M}}</ref>–3,700<ref name=fok/>
| luminosity = 320,000 - 380,000,<ref name=wright/> {{nowrap|1,100,000<ref name=fok/>}}
| age_myr = 3.5-5.0<ref name=clark2005/>
}}
{{Starbox catalog
| names= [[Westerlund&nbsp;1]]&nbsp;W26, [[2MASS]]&nbsp;J16470540-4550367, Westerlund&nbsp;1&nbsp;BKS&nbsp;AS, Westerlund&nbsp;1&nbsp;BKS&nbsp;A
}}
{{Starbox reference
| Simbad=Cl*+Westerlund+1+BKS+AS}}
{{Starbox end}}
'''Westerlund 1-26''' atau '''Wd 1-26''' adalah bintang [[Hyper Raksasa|hyper raksasa merah]] yang terletak di pinggiran gugus bintang super, [[Westerlund 1]]. Westerlund merupakan salah satu bintang terbesar yang diketahui dengan jari jari yang bervariasi, sekitar 1,530-2,550 ruas jari jari Matahari (1,06 × 10 9 -1,77 × 10 9 [[km]]; 7,1-11,9 [[au]]), atau sekitar 3,6-16,6 kali miliar matahari jika diisi Volumenya. Jika bintang ini ditempatkan di pusat tata surya kita, maka permukaannya akan menelan orbit Saturnus.

Sejak penemuannya, Westerlund 1-26 telah dikenal sebagai sumber radio yang kuat. Ini adalah bintang aktif yang sangat besar di Westerlund 1. Sifat fisik bintang ini belum dipahami dengan baik, karena punahnya antarbintang dalam gugus dan kurangnya data saat ini.<ref>{{Cite web|url=http://astronesia.blogspot.com/2013/09/bintang-westerlund-1-bks-as-kandidat.html?m=1|title=Bintang Westerlund 1 BKS AS : Kandidat Bintang Terbesar Di Langit - Berita Astronomi|last=https://plus.google.com/107573651009036517198|language=en|access-date=2020-02-13}}</ref>

== Referensi ==
<references />

== Pranala luar ==

* https://www.newsmax.com/t/newsmax/article/778682?keywords=westerlund-1-26-largest-stars&year=2017&month=03&date=14&id=778682