William Herschel discovered NGC 3798 = H II-340 = h938 on 6 Apr 1785 (sweep 393) and noted "F, vS, lbM." CH's reduction is 9 sec of RA east of UGC 6632. He observed this galaxy again on the next sweep 4 nights later and recorded "vF, vS, stellar with a vF and very short ray towards the preceding side." JH's position (h938) matches UGC 6632.

400/500mm - 17.5" (4/14/01): fairly faint, fairly small, elongated 4:3 WSW-ENE, 1.0'x0.7', moderate concentration with a small brighter core visible with direct vision. In a small group (LGG 245) with NGC 3812 14' NE and NGC 3815 20' ENE.

Notes by Steve Gottlieb