David Todd discovered NGC 4202 = Todd 18 on 6 Feb 1878 during his search for a trans-Neptunian planet (AN 2698). Dreyer only included eight of the 30 objects which Todd sketched as many were considered doubtful or near nebulae already catalogued. Todd's sketch of #18, which includes several nearby field stars, clearly identifies NGC 4202 = UGC 7337 at 12 18 08.6 -01 03 52 (2000). This means that Todd's rough position was 3 tmin too far west although a number of his entries have large errors in RA.

The RNGC misidentifies CGCG 013-109 as NGC 4202, located at 12 14.9 -02 27 (2000). Early versions of U2000.0 atlas have it misplotted at this position. I described this galaxy as nonexistent in RNGC Corrections #5 but corrected the identification in #6. See Corwin's notes.

400/500mm - 17.5" (3/20/93): very faint, fairly small, elongated 2:1 WNW-ENE, low even surface brightness. A mag 13.5 star is 2.0' NNE of center.

Notes by Steve Gottlieb