Object name: MRK0231
MRK 0231 is a very active galaxy in Ursa Major a bit less than a degree north of Alioth the star in the handle of the Big Dipper before the bowl. NED classifies it as SA(rs)c? pec; LIRG; SY1 Which says it is a luminous infrared galaxy with a Seyfert 1 nucleus. This is one step down from a quasar. Some papers call it a BAL quasar. BAL stands for Broad Absorption Line. Some say it is a starburst galaxy due to its strong IR emission others say this is just a characteristic of the very well fed black hole at its core. In any case, this has to be the result of a nearly complete merger of two equal sized spiral galaxies. The AGN gives it a star-like core. So star-like the core appears to be a bright star. It gave me fits to process it in fact. The core is 10 times brighter than the disk of the galaxy just one second of arc away. I've never encountered a galaxy with such a powerful star-like core, especially one over a half billion light-years away.
Related Designation(s):1AXG J125611+5652, 1AXG J125612+5652, 1XMM J125614.3+565224, 2MASS J12561422+5652252, 2MASX J12561432+5652244, 2XMM J125614.2+565224, 2XMMp J125614.2+565224, 87GB 125405.2+570847, 87GB[BWE91] 1254+5708, AKARI J1256145+565223, C-GOALS 18, CGCG 1254.0+5709, CGCG 293-045, CGCG 294-004, CGPG 1254.0+5709, CJ2 1254+571, CRATES J1256+5652, CRATES J125614.23+565225.2, CXO J125614.2+565225, GB6 J1256+5652, ICRF J125614.2+565225, IERS B1254+571, IRAS 12540+5708, IRAS F12540+5708, ISOSS J12562+5652, JVAS J1256+5652, LQAC 194+056 001, MCG +10-19-004, MRK 0231, MRK0231, NSA 142553, NVSS J125614+565223, PGC 044117, SBS 1254+571, SDSS J125614.23+565225.3, SSTSL2 J125614.23+565225.1, TXS 1254+571, UGC 08058, UZC J125614.3+565225, VII Zw 490, VIPS 0613, VIPS J12562+5652, VLSS J1256.2+5652, [A2001] J125614.2+565225, [dML87] 663, [FBS2007] 49, [FCC2009] 008, [HRT2007] J125614+565220, [JBB2007] J125614.23+565225.2 , [MBI96] 1254+571, [RC2] A1254+57, [RLH2011] J1256+5652, [SLK2004] 0753, [UIY2014] 22, [VCV2001] J125614.2+565225, [VCV2006] J125614.2+565225, [WB92] 1254+5708,