William Herschel discovered NGC 4892 = H II-390 = h1508 on 11 Apr 1785 (sweep 396) and simply noted "F". His position was accurate, although John Herschel's RA was 11 sec too large.

400/500mm - 17.5" (5/14/94): very faint, thin edge-on SSW-NNE, 1.0'x0.2'. Followed by two mag 14-14.5 stars with separation 39" oriented SSW-NNE and parallel to the major axis (closer star is 0.6' E of center). NGC 4859 lies 14.6' SW. Outlying member of AGC 1656.

Notes by Steve Gottlieb