2010IAUC.9120....1N

As first announced on CBET 2183, K. Nishiyama (Kurume, Fukuoka- ken, Japan) and F. Kabashima (Miyaki-cho, Saga-ken, Japan) reported the discovery of a possible nova (mag 10.5) on two unfiltered CCD frames taken around Feb. 20.857 UT using a 105-mm f/4 camera lens (+ SBIG STL6303E camera); they confirmed the appearance of the new object at mag 10.3 on six unfiltered CCD frames taken around Feb. 21.832 (and mag 10.7 on Feb. 22.846) using a Meade 0.40-m reflector (+ SBIG STL1001E camera), from which they measured the following precise position: R.A. = 17h06m07s.53, Decl. = -37o14'27".4 (equinox 2000.0). Nothing is visible at this position on two past survey frames taken on 2009 Sept. 18.425 (limiting mag 13.6) and Oct. 3.414 (limiting mag 12.3), or on a Digitized Sky Survey (DSS) plate from 1997 Apr. 2.8 (limiting red mag 18.0). Following posting on the Central Bureau's unconfirmed-objects webpage, other observers have reported observations of the new variable. S. Kiyota (Tsukuba, Japan; remotely using a Global-rent-a-scope 32-cm reflector + SBIG ST-10XE CCD camera located at Moorook, South Australia) reports position end figures 07s.51, 26".9 and the following magnitudes: Feb. 22.701, V = 12.03; 22.702, B = 13.09; 22.703, R_c = 10.70; 22.705, I_c = 9.65. Kiyota adds that nothing is visible at this position on a V-band Digitized Sky Survey plate from 1988 Apr. 14 (no limiting magnitude provided). E. Guido and G. Sostero also imaged this object remotely through a 0.40-m reflector from the GRAS Observatory at Moorook on Feb. 22.8, yielding position end figures 07s.50, 27".7 and unfiltered CCD mag about 10.1. W. Vollmann, Vienna, Austria, reports the following green (approximately visual) magnitudes for the variable from DSLR images taken with a 0.60-m f/3.5 reflector by H. Koberger, Vilaflor, Tenerife: Feb. 24.279, 12.3; 25.254, 12.4. Koberger adds that low-resolution spectra (grating 100 lines/mm) taken around the same times clearly show strong H_alpha emission.