Hermann Kobold discovered IC 3947 = K. 2-9, along with IC 3946 and 3949, on 12 May 1896 with the 18-inch refractor at the Strasbourg Observatory. His micrometric position matches CGCG 160-211.
400/500mm - 17.5" (4/21/90): extremely faint and small, round. Located in AGC 1656 with IC 3946 1.7' NNW and IC 3949 3.0' NNE.
Notes by Steve Gottlieb