Circular No. 6731 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/cfa/ps/cbat.html Phone 617-495-7244/7440/7444 (for emergency use only) USNO 1425.09823278 J.-y. Hu, Y.-l. Qiu, W.-d. Li, and J.-y. Wei, Beijing Astronomical Observatory (BAO); and A. Esamdin, Urmqi Astronomical Station, report their discovery of a new apparent cataclysmic variable star: "The discovery was made during the BAO supernova survey on Aug. 28, using the 0.60-m telescope at Xinglong Station. The R magnitudes of this star were 13.3 and 13.5 on Aug. 28 and 31, respectively. The USNO A1.0 catalogue lists the R and B magnitudes of a star in this location as 19.9 and 20.3, respectively, with the position given as R.A. = 19h27m11s.63, Decl. = +54o17'51".5 (equinox 2000.0). A spectrogram obtained with the 2.16-m telescope at Xinglong Station on Aug. 31 shows typical features of cataclysmic variables during outburst, with absorption Balmer lines and weak He I lines (including a feature at 447.1 nm)." GRB 970828 K. Yanagisawa and Y. Nakada, Kiso Observatory, University of Tokyo; and M. Abe and Y. Ishibashi, Institute of Space and Astronautical Science, report that a search was made with the Kiso Schmidt telescope on Aug. 29.46-29.52 and 30.45-30.63 UT for an optical counterpart to GRB 970828, around the position given by the ASCA team on IAUC 6729. Three 15-min I-band CCD images (size 12'.5 x 12'.5) revealed no new objects brighter than the limiting magnitude of the second Palomar Observatory Sky Survey. However, two faint objects were seen very close to the x-ray position; the closer object (I about 20.7) is at R.A. = 18h08m29s.48, Decl. = +59o19'24".3 (equinox 2000.0), while a second object (I = 20.5) has position end figures 29s.48, 35".1. The positional uncertainties are 0s.03 in R.A. and 0".2 in Decl. No light variation > 0.5 mag was detected during the two-day observations. SUPERNOVA 1997dd IN NGC 6060 Reported unfiltered CCD magnitudes (GSC references stars): Aug. 29.89 UT, 16.7 (S. Moretti and S. Tomaselli, Forli, Italy); 29.905, 17.1 (L. Boschini, Bergamo, Italy). SUPERNOVA 1997cx IN NGC 3057 Unfiltered CCD magnitude estimate by Moretti and Tomaselli: Aug. 29.9 UT, 16.7. (C) Copyright 1997 CBAT 1997 September 3 (6731) Daniel W. E. Green