William Herschel discovered NGC 3689 = H II-339 = h897 on 6 Apr 1785 (sweep 393) and noted "pF, pS, irr." JH logged "B; pL; gbM; lE". His position is just of the south side of UGC 6467.

200/250mm - 8" (4/24/82): faint, round.

400/500mm - 17.5" (4/9/99): moderately bright, oval 5:3 ~E-W, ~1.3'x0.8', broadly concentration to a brighter core. The core brightens but no distinct nucleus.

Notes by Steve Gottlieb