Royal Frost discovered IC 3663 = F. 1014 on a plate taken at Harvard's Arequipa Station on 10 May 1904. This galaxy is not in PGC and HyperLEDA fails to label PGC 42586 as IC 3663. Corwin notes IC 3663 has sometimes been misapplied to LEDA 1405025, which is 5.6' SSW. This latter galaxy is smaller but has a higher surface brightness.

600/800mm - 24" (5/24/20): at 225x; extremely faint, small, roundish, very low even surface brightness, 15"-20" diameter. Located 19' WSW of NGC 4640 and 22' SSW of IC 810.

Notes by Steve Gottlieb