IAU Circ., 8803, 1 (2007/February-0)
V1280 Scorpii = Nova Scorpii 2007.
YAMAOKA H., NAKAMURA Y., NAKANO S., SAKURAI Y. and KADOTA K.
Abstract (from CDS):
Reports of apparently independent discoveries of a possible nova have been received by the Central Bureau: H. Yamaoka, Kyushu University, communicates the discovery of a new object (mag 9.9) by Yuji Nakamura (Kameyama, Mie, Japan) on two unfiltered CCD images taken on Feb. 4.8624 UT with a 135-mm camera lens, with the position of the variable measured to be R.A. = 16h57m41s.0, Decl. = -32o20'34" (equinox 2000.0, uncertainty about 30"); nothing was detected at this position with the same equipment on Jan. 29.8669 (limiting mag 12.0) or Feb. 2.8662 (limiting mag 11.0). S. Nakano, Sumoto, Japan, reports the discovery by Yukio Sakurai (Mito, Ibaraki-ken) of the same star at mag 9.4 on two 10-s CCD exposures taken on Feb. 4.854 (correction to time given on CBET 834) using a Fuji FinePix S2 Digital Camera (+ Nikon 180-mm f/2.8 lens), the position measured to be R.A. = 16h57m40s.91, Decl. = -32o20'36".4; nothing is visible on a CCD frame taken by Sakurai on Feb. 2.8. Nakano adds that he has measured the variable's position from one of Sakurai's images, yielding position end figures 41s.24, 36".5. Nakano also writes that K. Kadota has confirmed the variable at mag 8.9 on an unfiltered CCD image taken on Feb. 5.818 with a 0.25-cm f/5 reflector, providing position end figures 41s.20, 35".8.
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