Wilhelm Tempel discovered NGC 5058 on 2 Jun 1883 while observing to the north of a comet. Dreyer references Tempel's discovery list V, but it is mentioned in AN 2522 (paper VII).

400/500mm - 17.5" (6/1/02): faint, small, slightly elongated, 0.5'x0.4', weak concentration to center but no defined core. Located 8' N of mag 8.4 SAO 100490.

Notes by Steve Gottlieb