William Herschel discovered NGC 5559 = H III-347 = h1777 on 10 Apr 1785 (sweep 394) and noted "vF, S, lE." There is nothing near his position, but 77 sec of RA east is UGC 9166. JH made a single observation and his position (adopted in the NGC) is within 30" of UGC 9166 = PGC 51155.

300/350mm - 13.1" (6/4/83): very faint, elongated WSW-ENE, fairly small, requires averted vision. NGC 5548 lies 26' NW (similar redshifts).

Notes by Steve Gottlieb