IC 1166
{{Short description|Pair of galaxies in Corona Borealis}}{{Infobox galaxy|name=IC 1166|image=File:IC1166 - SDSS DR14.jpg|caption=Sloan Digital Sky Survey image of galaxy pair IC 1166|constellation name=Corona Borealis|ra=16h 02m 08.90s|z=0.072080|dec=+26d 19m 38.0s|h_radial_v=20,818 km/s|dist_ly=977 Mly (299.54 Mpc)|appmag_v=16.77 and 19.08|sbrightness=23 and 23.4 mag/arcsec|type=E and SBb|size=110,000 ly and 160,000 ly|notes=Interacting galaxy and Seyfert galaxy|names=IC 1166 NED01: PGC 56771, Mrk 867, 2MASX J16020888+2619456, SDSS J160208.91+261945.5, NVSS J160208+261942, KUG 1600+264, CGCG 137-018, IRAS 16000+2628, PGC 1772024, Mrk 867N
IC 1166 NED02: PGC 1771884, UZC J160208.9+261929, 2MASX J16020881+2619316, SDSS J160208.82+261931.1, Mrk 867S|epoch=J2000}}
IC 1166 are a pair of galaxies in the Corona Borealis constellation{{Cite web |last=Astronomy |first=Go |title=IC 1166 {{!}} galaxy pair in Corona Borealis {{!}} IC List {{!}} GO ASTRONOMY |url=https://www.go-astronomy.com/ic.php?ID=1227 |access-date=2024-04-30 |website=Go-Astronomy.com |language=en-US}} comprising IC 1166 NED01{{Cite web |title=IC 1166 NED01 - Elliptical Galaxy in Corona Borealis {{!}} TheSkyLive.com |url=https://theskylive.com/sky/deepsky/ic1166-ned01-object |access-date=2024-04-30 |website=theskylive.com}} and IC 1166 NED02.{{Cite web |title=IC 1166 NED02 - Barred Spiral Galaxy in Corona Borealis {{!}} TheSkyLive.com |url=https://theskylive.com/sky/deepsky/ic1166-ned02-object |access-date=2024-04-30 |website=theskylive.com}} They are located 977 million light-years from the Solar System{{Cite web |title=Your NED Search Results |url=https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=42155&objname=4&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1 |access-date=2024-04-30 |website=ned.ipac.caltech.edu}} and were discovered on July 28, 1892, by Stephane Javelle.{{Cite web |title=Index Catalog Objects: IC 1150 - 1199 |url=https://cseligman.com/text/atlas/ic11a.htm#ic1166 |access-date=2024-04-30 |website=cseligman.com}}
Galaxies
IC 1166 NED01
IC 1166 NED01{{Cite web |title=NED Search Results for IC 1166 NED01 |url=https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=224128&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1 |access-date=2024-04-30 |website=ned.ipac.caltech.edu}} or PGC 56771{{Cite web |title=HyperLeda -object description for PGC 56771 |url=http://atlas.obs-hp.fr/hyperleda/ledacat.cgi?o=IC%201166 |access-date=2024-04-30 |website=atlas.obs-hp.fr}} is a type E elliptical galaxy.{{Cite web |last=Astronomy |first=Go |title=IC 1166 NED01 {{!}} galaxy in Corona Borealis {{!}} IC List {{!}} GO ASTRONOMY |url=https://www.go-astronomy.com/ic.php?ID=1228 |access-date=2024-04-30 |website=Go-Astronomy.com |language=en-US}} Located above IC 1166 NED02, it has a diameter of approximately 110,000 light-years. PGC 56771 has an active nucleus and it is classified as a Seyfert type 1 galaxy. It has a quasar-like appearance, but its host clearly seen and presents two sets of emission lines which are superimposed on each other.{{Cite web |title=Astronomical Glossary |url=https://ned.ipac.caltech.edu/level5/Glossary/Essay_seyfert.html |access-date=2024-04-30 |website=ned.ipac.caltech.edu}} PGC 56771 is classified a Markarian galaxy (designated Mrk 867), because compared to other galaxies its nucleus emits excessive amounts of ultraviolet rays.{{Cite journal |title=1986ApJS...62..751M Page 751 |url=https://adsabs.harvard.edu/full/1986ApJS...62..751M |access-date=2024-04-30 |journal=The Astrophysical Journal Supplement Series|bibcode=1986ApJS...62..751M |last1=Mazzarella |first1=Joseph M. |last2=Balzano |first2=Vicki A. |date=1986 |volume=62 |page=751 |doi=10.1086/191155 }} It has a surface brightness of 23.2 magnitude and, located at right ascension (16:02:08.92) and declination (26:19:45.60) respectively.
IC 1166 NED02
IC 1166 NED02{{Cite web |title=NED Search Results for IC 1166 NED02 |url=https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=224129&objname=7&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1 |access-date=2024-04-30 |website=ned.ipac.caltech.edu}} or PGC 1771884{{Cite web |title=HyperLeda -object description for PGC 1771884 |url=http://atlas.obs-hp.fr/hyperleda/ledacat.cgi?o=PGC%201771884 |access-date=2024-04-30 |website=atlas.obs-hp.fr}} is a type SBbc spiral galaxy.{{Cite web |last=Astronomy |first=Go |title=IC 1166 NED02 {{!}} galaxy in Corona Borealis {{!}} IC List {{!}} GO ASTRONOMY |url=https://www.go-astronomy.com/ic.php?ID=1229 |access-date=2024-04-30 |website=Go-Astronomy.com |language=en-US}} Located below IC 1166 NED01, it has an approximate diameter of 160,000 light-years making it slightly larger compared to the other galaxy and does not have an active galactic nucleus. PGC 1771884 has a surface brightness of 23.4 magnitude and, a right ascension of (16:02:08.83) and declination (26:19:31.20).