Albert Marth discovered NGC 6458 = m 350, along with NGC 6460, on 2 Jul 1864 and noted "eF, vS, stellar." His position is within 1' of UGC 10994. MCG misidentifies NGC 6460 (5' southeast) as NGC 6458.

400/500mm - 17.5" (7/1/89): faint, very small, almost round, weak concentration. Located in a N-S string of three mag 14 stars. Pair with NGC 6460 5.2' ESE in a group.

Notes by Steve Gottlieb