Guillaume Bigourdan discovered NGC 398 = Big. 10 on 28 Oct 1886 with the 12" refractor at the Paris Observatory. His position is accurate.
400/500mm - 17.5" (12/23/89): extremely faint and small, round, low surface brightness. Requires averted to see well. NGC 399 lies 7' NNE.
Notes by Steve Gottlieb