POSSIBLE NOVA OPHIUCHI 1998 S. Nakano reports in IAUC 6941 that Kesao Takamizawa, Saku-machi, Nagano-ken, Japan has discovered a possible nova of mag. 9.5 on two exposures from 1998 June 15.561 UT. Takamizawa was using a 10-cm f/4.0 lens and T-Max 400 film. According to positions derived by the discoverer and R. and Y. Kushida (who confirmed the discovery with CCD) the possible nova is located at R.A. = 17h32m00s, Decl. = -19o13'.9 (2000.0). No object was present at this place on 48 previous patrol films from 1994 Feb 17 to 1998 May 19. T. Kato, Kyoto University, notes that this object lies within the error circle of the ROSAT source 1RXS 173200.0-191349. No spectral observations are available at present.