2011CBET.2813....1S

Two independent discoveries of an apparent nova in Scorpius have been received by the Central Bureau. John Seach (Chatsworth Island, NSW, Australia) reported finding a star of mag 9.8 on four CCD images taken on Sept. 6.37 UT with a digital single-lens-reflex camera (+ 50-mm f/1.2 lens; limiting mag 10.5), with the position given as R.A. = 16:36:43, Decl. = -41:32:46 (equinox 2000.0), adding that nothing was visible at this position on his image taken on Sept. 5.36 (limiting mag 10.5). H. Yamaoka, Kyushu University, forwards a report that Yuji Nakamura (Kameyama, Mie, Japan) discovered this possible nova at mag about 9.7 on five unfiltered CCD images taken with a 150-mm-focal-length telephoto lens on Sept. 6.431; Nakamura measured the position of the new object as R.A. = 16:36:44.4, Decl. = -41:32:34 (uncertainty about 30"), adding that nothing is visible at this position on his image taken on Aug. 29.451 (limiting mag about 12.0). When Yamaoka posted Nakamura's discovery observation on the Central Bureau's Transient Object Confirmation Page, it was assigned the designation PNV J16364440-4132340 was assigned; the posting of Seach's discovery observation yielded a second designation, PNV J16364300-4132460.