William Herschel discovered NGC 4127 = H I-279 = h1096 on 12 Dec 1797 (sweep 1068) and noted "pB, cL, irr E, bM." His RA is either 45 sec too large, or perhaps he reversed the polar distance of this object and NGC 4133 as the RA order is reversed. In any case, John Herschel measured an accurate position on 2 sweeps.

400/500mm - 17.5" (5/2/92): fairly faint, fairly small, elongated 3:2 NW-SE, broad mild concentration. A mag 14.5 star is at the east end and second mag 14 star is close east. Forms the east vertex of an isosceles triangle with mag 5.8 SAO 7500 13' NW and mag 7.4 SAO 7497 13' SW.

Notes by Steve Gottlieb