IC 1166

IC 1166 are a pair of galaxies in the Corona Borealis constellation comprising IC 1166 NED01 and IC 1166 NED02. They are located 977 million light-years from the Solar System and were discovered on July 28, 1892, by Stephane Javelle.

Galaxies
IC 1166 NED01

IC 1166 NED01 or PGC 56771 is a type E elliptical galaxy. 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. PGC 56771 is classified a Markarian galaxy (designated Mrk 867), because compared to other galaxies its nucleus emits excessive amounts of ultraviolet rays. 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 or PGC 1771884 is a type SBbc spiral galaxy. 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).