S. Nakano, Sumoto, Japan, reports the discovery by Tadashi Kojima (Tsumagoi, Agatsuma-gun, Gunma-ken, Japan) of a possible nova (mag 12.6) on two frames (limiting magnitude 14) taken on July 16.512 UT using a Canon EOS 40D camera (+ 150-mm f/2.8 lens) mounted on a Sky-memo auto equatorial telescope. The new variable is located at R.A. = 18:19:37.0, Decl. = -19:07:40 (equinox 2000.0); nothing was visible at this position on Kojima's earlier patrol frames taken with the same instrumentation on 2011 Apr. 9.746, July 5.514, Sept. 23.427, 2012 Mar. 25.789, Apr. 14.718, May 23.687, and June 22.547 (limiting mag 13.5). The variable was designated PSN J18193700-1907400 when it was posted at the Central Bureau's TOCP webpage. Additional magnitudes for the new object: 1991 Aug. 30, [19 (Toru Yusa, Osaki, Japan; red Digitized Sky Survey plate); 2012 June 27.629, [13.5 (Kojima); July 17.598, 12.2 (Kojima); July 17.993, V = 12.7 (Yusa; remotely using a 0.43-m f/6.8 astrograph + SBIG STL-11000M camera at the AstroCamp Observatory near Nerpio, Spain; limiting mag about 16; position end figures 36s.94, 40".2; reference stars from USNO-B1.0 catalogue; image posted at the following website URL:
http://space.geocities.jp/yusastar77/supernova/pnvinSgr_120718.htm); July 18.282, B = 14.34, V = 12.71, R_c = 11.15, I = 9.96 (Yusa; Landolt equatorial standards; position end figures 36s.95, 40".3; remotely using a 0.25-m f/3.4 hyperbolic astrograph + SBIG ST-10XME camera at the RAS Observatory, iTelescope network, near Mayhill, NM, U.S.A.; limiting magnitude about 16.5); July 18.520, I_c = 9.92 (Hiroyuki Maehara, Kwasan Observatory, Kyoto University, 0.25-m telescope); July 18.522, R_c = 11.18 (Maehara); July 18.524, V = 12.45 (Maehara); July 18.527, B = 14.11 (Maehara).