Guillaume Bigourdan discovered IC 136 = B. 127, along with numerous other HII regions and star clouds in M33, on 28 Oct 1889. See IC 135.

400/500mm - 17.5" (10/25/97): very faint, ill-defined hazy region in M33 between IC 135 3.5' N and a mag 11.5 star 2.5' SSE (just west of the line connecting these objects). Appears as a slightly locally brighter region of 30" diameter and not as noticeable as the other IC HII regions - would have passed over if casually sweeping galaxy. This star association may have a smaller HII component.

Notes by Steve Gottlieb