Albert Marth discovered NGC 6998 = m 431, along with NGC 6999, on 19 Oct 1864 and noted "eeF, vS." His position is less than 1' north of ESO 464-014 = PGC 65925.

400/500mm - 17.5" (7/16/93): extremely faint, very small, round, extremely low surface brightness, requires averted vision. Forms a pair with NGC 6999 5.1' ESE. Appears nearly stellar and about mag 16pg on the POSS. Member of AGC 3733.

17.5" (8/27/92): not found from Grandview (8400') in the Eastern Sierras.

Notes by Steve Gottlieb