Hermann Kobold discovered IC 3949 = K. 2-10, along with IC 3946 and 3947, on 12 May 1896 with the 18-inch refractor at the Strasbourg Observatory. He described it as "F, pS, E."

300/350mm - 13.1" (4/29/84): very faint, elongated. Situated between two stars in AGC 1656.

400/500mm - 17.5" (4/21/90): very faint, fairly small, edge-on SW-NE, weak concentration. A mag 12.5 star is 1.5' N. Located in a rich section of AGC 1656 with IC 3946 2.1' SW, IC 3960 2.9' NE and IC 3947 3.0' SSW.

Notes by Steve Gottlieb