Object name: NGC5474
NGC 5474 is the classic example of a "sloshed" galaxy. As a satellite of M101, it was once thought its core was pulled off center by the gravity of the much larger M101. That's not quite the case. M101's gravity is involved but it is causing the contents of the galaxy to slosh back and forth much like a not congealed egg in a frying pan when the pan is moved back and forth. Note that you can see stars on the "missing" side. Just very few. So it hasn't lost the stars, just moved them to the other side temporarily. Adam Block has a bit more on this subject at: http://www.caelumobservatory.com/obs/n5474.html so I'll let you read it there.
Related Designation(s):11HUGS 365, 2MASX J14050160+5339439, CGCG 1403.2+5354, CGCG 272-023, HDCE 0853 NED002, IRAS 14032+5353, IRAS F14032+5353, ISOSS J14051+5338, LDCE 0842 NED011, LGG 371:[G93] 002, MCG +09-23-032, NGC 5474, NGC5474, NSA 144464, PGC 050216, SDSS J140501.41+533944.4, UGC 09013, UZC J140501.5+533945, VV 344b, [M98j] 170 NED78, [SLK2004] 0952, [SPB93] 244,