2011IAUC.9233....1S

As first announced on CBET 2813, 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 SLR camera (+ 50-mm f/1.2 lens; limiting mag 10.5), with the position given as R.A. = 16h36m43s, Decl. = -41o32'46" (equinox 2000.0), adding that nothing was visible at this position on an image from 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-f.l. telephoto lens on Sept. 6.431; Nakamura's position end figures were 44s.4, 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 TOCP, it was assigned the designation PNV J16364440-4132340; the posting of Seach's discovery observation yielded a second designation, PNV J16364300-4132460. N. Samus writes that the permanent GCVS designation V1313 Sco has been given based on the spectroscopic confirmation of this object as a nova (see below).