John Herschel discovered NGC 4507 = h3399 on 5 Jun 1834 and recorded "pB; S; R: psmbM to a * 16m." His position (measured on two sweeps) is at the east edge of ESO 322-029 = PGC 41960. He must have made an error precessing the position to 1860 coordinates in the GC, as the position there (copied into the NGC) was 3.0 min of RA too far west. As a result, Joseph Turner couldn't find this galaxy when he searched for it with the Great Melbourne Telescope in 1878.

The identication with NGC 4507 was missed in the 1932 Shapley-Ames Catalogue and this galaxy was listed as one of 6 "new anonymous" galaxies (New 2).

400/500mm - 17.5" (4/7/89): fairly faint, oval, weak concentration. Located 5.2' SW of mag 5.8 SAO 203621 and the glare detracts from viewing. This is a Seyfert galaxy and possible member of the Centaurus galaxy cluster (AGC 3526).

Notes by Steve Gottlieb