Francis Leavenworth discovered NGC 5036 = LM 2-458, along with NGC 5036, on 25 Jan 1887. He noted "mag 15.5, 0.2' dia, R, gbM, 1st of 2." and his position matches PGC 46057. Dorothy Carlson classifies this number as nonexistent. NGC 5036 and NGC 5039 were the last Leander McCormick discoveries that made it into the NGC.

400/500mm - 17.5" (6/1/02): very faint, very small, round, 0.4' diameter. With direct vision a slightly brighter 5" core is visible. Forms a pair with difficult NGC 5039 2.6' NE.

Notes by Steve Gottlieb