View source for Astronomy:Zwicky's Triplet

{{Short description|Minor galaxy cluster in the constellation Hercules}}
{{Infobox galaxy cluster
| name                = Zwicky's Triplet
| image               = Arp103 - SDSS DR14.jpg
| image size          = 
| image_size          = 
| imagesize           = 
| alt                 = 
| caption             = 
| credit              = 
| epoch               = 
| constellation       = [[Astronomy:Hercules (constellation)|Hercules]]
| ra                  = {{RA|16|49|28.3}}<ref name=GaiaDR2/>
| dec                 = {{DEC|+45|27|40}}<ref name=GaiaDR2/>
| brightest_member    = NGC 6241<ref name=SIMBAD/>
| member_no           = 
| major_axis_mpc      = 
| minor_axis_mpc      = 
| richness            = 
| bmtype              = 
| velocity_dispersion = 
| redshift            = 
| distance            = <!-- {{convert|000|Mpc|Mly|0|abbr=on|lk=on}} {{hub|0.00}} -->
| temperature         = 
| mass                = <!-- 0{{e|14}} {{hub|0.00}}  In solar masses -->
| luminosity          = 
| flux                = 
| notes               = 
| other_names         = 
| names               = APG 103<ref name=SIMBAD/>
| references          =
}}

'''Zwicky's Triplet''' (Arp 103<ref>''SKY CATALOGUE 2000.0, Volume 2: Double Stars, Variable Stars and Nonstellar Objects'' (edited by Alan Hirshfeld and Roger W. Sinnott, 1985), page l</ref>) is a group of three galaxies visible in the constellation [[Astronomy:Hercules (constellation)|Hercules]].<ref name=Steinicke2007/><ref name=Zombeck2006/>

== The other Zwicky's Triplet ==
IC 3481 at 12h 32m, +11° 24' (2000.0) in Virgo, which is connected to PGC 41646 ("IC 3481A") as the system Arp 175, but probably not connected to IC 3483, is sometimes called Zwicky's Triplet, but this name is more often applied to the system at 16h 49m, +45° 30' (2000.0) in Hercules.<ref>''SKY CATALOGUE 2000.0, Volume 2: Double Stars, Variable Stars and Nonstellar Objects'' (edited by Alan Hirshfeld and Roger W. Sinnott, 1985), page 362</ref><ref>[https://cseligman.com/text/atlas/ic34a.htm#ic3481 Courtney Seligman, IC 3481]</ref>

==See also==
* [[Astronomy:Wild's Triplet|Wild's Triplet]]
* [[Astronomy:Robert's Quartet|Robert's Quartet]]
* [[Astronomy:Stephan's Quintet|Stephan's Quintet]]
* [[Astronomy:NGC 7331 Group|NGC 7331 Group]] (also known as the Deer Lick Group, about half a degree northeast of Stephan's Quintet)
* [[Astronomy:Seyfert's Sextet|Seyfert's Sextet]]
* [[Astronomy:Copeland Septet|Copeland Septet]]

==References==
{{Reflist|refs=

<ref name=SIMBAD>{{cite simbad | title=Zwicky's Triplet | access-date=2020-01-08 }}</ref>

<ref name=GaiaDR2>{{Cite Gaia DR2|1407390177932918400}}</ref>

<ref name=Steinicke2007>{{cite book |last1=Steinicke |first1=Wolfgang |last2=Jakiel |first2=Richard |date=January 4, 2007 |publisher=Springer Science & Business Media |isbn=978-1-84628-699-5|page=[https://archive.org/details/galaxieshowtoobs0000stei/page/194 194] |url=https://archive.org/details/galaxieshowtoobs0000stei|url-access=registration |title=Galaxies and How to Observe Them}}</ref>

<ref name=Zombeck2006>{{cite book |last1=Zombeck |first1=Martin V. |title=Handbook of Space Astronomy and Astrophysics |date=November 9, 2006 |publisher={{wipe|Cambridge University Press}} |isbn=978-1-139-45950-1|page=125 |url=https://books.google.com/books?id=tp_G85jm6IAC&pg=PA125}}</ref>

}}


{{DEFAULTSORT:Triplet, Zwicky's}}
[[Category:Hercules (constellation)]]
[[Category:Galaxy clusters]]


{{Sourceattribution|Zwicky's Triplet}}