2012CBET.3124....1S

John Seach, Chatsworth Island, NSW, Australia, reported his discovery of a possible nova (mag 10.5) on six images (limiting mag 11.0) taken on May 19.484 UT with a digital SLR camera (+ 50-mm f/1.0 lens). The object was measured to be located at R.A. = 17:39:56, Decl. = -24:47:42 (equinox 2000.0); Seach adds that nothing is visible at this position on the Digitized Sky Survey (red image, but no date or limiting magnitude provided). The variable was designated PNV J17395600-2447420 when it was posted at the Central Bureau's TOCP webpage. Additional magnitudes for the variable: May 17.525, [12.5: (Rob Kaufman, Bright, Victoria, Australia; digital SLR camera); 18.488, [11.0 (Seach); 18.614, [14: (Seiichiro Kiyota, Tsukuba, Japan; 85-mm f/2 camera lens + ST-10XME CCD camera + I_c filter); 18.735, [13.2 (Akira Takao, Kitakyushu, Japan; 100-mm f/4 camera lens + STL-6303E camera); 19.679, 10.6 (Kaufman; new object visible about 0'.7 northeast of Seach's position); 20.3, 9.5 (Ernesto Guido, Giovanni Sostero, and Nick Howes; remotely with a 0.43-m f/6.8 astrograph of the RAS Observatory near Mayhill, NM, U.S.A.; position end figures 57s.00, 07".3; reference stars from CMC-14 catalogue; an animation showing a comparison between their confirmation image and a red Digitized Sky Survey from 1996 has been posted at website URL http://bit.ly/KCYwpB); 22.67, 10.4 (Takao); 23.98, 10.3 (Luca Buzzi and Federica Luppi, Varese, Italy, 0.38-m f/6.8 reflector; position end figures 57s.01, 07".1; UCAC-3 reference stars; their image is posted at website URL http://www.astrogeo.va.it/pub/TOCP/PNV_J17395600-2447420.jpg).