{{Short description|Lenticular galaxy in the constellation Boötes}}
{{Infobox galaxy|name=NGC 5539|image=File:NGC 5539 SDSS2.jpg|constellation name=[[Boötes]]|z=0.058518|dist_ly=857 [[light year|Mly]] (262.6 [[Megaparsec|Mpc]])|group_cluster=Abell 1890|size=273,000 [[light year|ly]]|type=cD; BrClg|names=PGC 51054, MCG +01-36-033, UZC J141737.8+081047, LEDA 51054, 2MASX J14173775+0810468|ra=14h 17m 37.8s|h_radial_v=17,381 [[kilometer per second|km/s]]|appmag_v=14.2|epoch=[[J2000]]|dec=+08d 10m 46.57s|appmag_b=13.7|size_v=0.4' x 0.3'|sbrightness=11.40}}
'''NGC 5539''' is a large [[lenticular galaxy]] in the [[Boötes|Boötes constellation]].<ref>{{Cite web |title=NGC 5539 - Lenticular Galaxy in Boötes {{!}} TheSkyLive.com |url=https://theskylive.com/sky/deepsky/ngc5539-object |access-date=2024-04-17 |website=theskylive.com}}</ref><ref name=":0">{{Cite web |title=Your NED Search Results |url=https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=238992&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1 |access-date=2024-04-17 |website=ned.ipac.caltech.edu}}</ref> It is located 857 million [[Light-year|light-years]] away and was discovered by [[John Herschel]] on 24th April, 1830.<ref name=":1">{{Cite web |title=New General Catalog Objects: NGC 5500 - 5549 |url=https://cseligman.com/text/atlas/ngc55.htm#5539 |access-date=2024-04-17 |website=cseligman.com}}</ref> According to Herschel, he found it quite large and irregular.<ref name=":1" /> NGC 5539 is about 273,000 light-years in diameter, meaning it is much larger compared to the [[Milky Way]] and its neighbor, the [[Andromeda Galaxy]].<ref name=":0" /> It is the [[brightest cluster galaxy]] in Abell 1890.<ref name=":0" /><ref>{{Cite web |title=NGC 5539 |url=https://simbad.u-strasbg.fr/simbad/sim-basic |access-date=2024-04-17 |website=simbad.u-strasbg.fr}}</ref>
It is said NGC 5539 can be classified as a high [[surface brightness]] galaxy with a surface brightness value of 11.40 [[Magnitude (astronomy)|mag]]/[[Degree (angle)|am<sup>2</sup>]].<ref>{{Cite web |title=Revised Data for NGC/IC Catalogue from NGC 5500 to NGC 5599 |url=http://astrovalleyfield.ca/AstronomieCompl/NGC%20et%20autres/WolfgangS/N5500_exc_web.htm |access-date=2024-07-29 |website=astrovalleyfield.ca}}</ref>
== References == {{reflist}}
{{NGC60}} {{Boötes}}
[[Category:Lenticular galaxies]] [[Category:Boötes]] [[Category:NGC objects|5539]] [[Category:Principal Galaxies Catalogue objects|51054]] [[Category:Astronomical objects discovered in 1830]] [[Category:Discoveries by John Herschel]] [[Category:MCG objects|+01-36-033]] [[Category:LEDA objects|51054]]