John Herschel discovered NGC 4706 = h3427 on 5 Jun 1834 and recorded "vF; vS; R; psbM; 10"."
Pietro Baracchi observed the field on 12 May 1885 with the 48" Melbourne telescope and wrote, "pretty bright, very small, round, a little brighter middle."
400/500mm - 17.5" (4/7/89): very faint, small, oval SSW-NNE, low surface brightness. Located 6.4' NNW of NGC 4709 and 12' ENE of brightest member NGC 4696 in the central portion of the Centaurus cluster (AGC 3526).
Notes by Steve Gottlieb