IC 4539

{{Short description|Galaxy located in Corona Borealis}}{{Infobox galaxy|name=IC 4539|image=File:IC4539 - SDSS DR14.jpg|caption=Sloan Digital Sky Survey image of IC 4539|constellation name=Corona Borealis|ra=15h 18m 31.15s|dec=+32d 23m 34.27s|z=0.061307|h_radial_v=18,365 km/s|dist_ly=845 Mly (259.1 Mpc)|appmag_v=16.3|appmag_b=15.5|sbrightness=13.4|type=SB?, SABb|size_v=0.40' x 0.4'|names=MCG +06-34-003, PGC 54642, SIT 0129-1, IRAS F15165+3234|epoch=J2000}}

IC 4539 is a type SABb{{Cite web |title=HyperLeda -object description |url=http://atlas.obs-hp.fr/hyperleda/ledacat.cgi?o=IC%204539 |access-date=2024-05-14 |website=atlas.obs-hp.fr}} intermediate spiral galaxy located in Corona Borealis. Its redshift is 0.061307,{{Cite web |title=IC 4539 - spiral galaxy with bar. Description IC 4539 |url=https://kosmoved.ru/get_ngcic.php?ID=IC_4539&lang=eng |access-date=2024-05-14 |website=kosmoved.ru}} which corresponds IC 4539 to be 845 million light-years from Earth.{{Cite web |title=Your NED Search Results |url=https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=40481&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1 |access-date=2024-05-14 |website=ned.ipac.caltech.edu}} It has an apparent dimension of 0.40 x 0.4 arcmin, meaning the galaxy is about 95,000 light-years across.{{Cite web |title=Revised IC Data for IC 4539 |url=https://spider.seds.org/ngc/revngcic.cgi?IC%204539 |access-date=2024-05-14 |website=spider.seds.org}} IC 4539 was discovered by Stephane Javelle on June 23, 1903, who found it "as faint, small, round with a very brighter middle."{{Cite web |title=Index Catalog Objects: IC 4500 - 4549 |url=https://cseligman.com/text/atlas/ic45.htm#ic4539 |access-date=2024-05-14 |website=cseligman.com}}{{Cite web |title=List of NGC/IC observers |url=http://www.klima-luft.de/steinicke/ngcic/obs_e.htm |access-date=2024-05-14 |website=www.klima-luft.de}}