William Herschel discovered NGC 4132 = H III-357 = h1099, along with NGC 4131 and 4134, on 11 Apr 1785 (sweep 396). He recorded the trio as "Three, the time and number belongs to the largest [NGC 4134] which is F, irregular. I suspect a fourth, but could not stay to ascertain it, though I am pretty sure. The other two NGC 4131 and NGC 4132] are vF, S, mE." John Herschel made three observations (first on 31 Mar 1827) and his mean position is a good match with this galaxy.

400/500mm - 17.5" (3/20/93): faint, fairly small, elongated 5:2 SSW-NNE, small brighter core. Second and faintest of three with NGC 4134 4.5' SSE and NGC 4131 4' NW.

Notes by Steve Gottlieb