Albert Marth discovered NGC 3438 = m 210 on 25 Mar 1865 and noted "vF, eS, alm stell." His position corresponds with UGC 5988.
400/500mm - 17.5" (2/28/87): fairly faint, small, round, bright core. A mag 13.5 star is 1.0' SE. NGC 3433 lies 25' SSW.
Notes by Steve Gottlieb