Electronic Telegram No. 1535 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) CBAT@CFA.HARVARD.EDU (science) URL http://www.cfa.harvard.edu/iau/cbat.html DWARF NOVA IN DRACO H. Yamaoka, Kyushu University, reports the discovery by K. Itagaki (Yamagata, Japan) of a previously unknown dwarf nova on his survey CCD image taken on Oct. 2.533 UT with a 0.21-m reflector. An image taken on Oct. 2.539 with a 0.60-m reflector shows the variable at mag about 14.9 and located at R.A. = 19h14m43s.55, Decl, = +60d52'13".9 (equinox 2000.0). Nothing is visible at this position on Itagaki's survey image from June 12.597 (limiting mag 17.5) or on the Digitized Sky Survey from 1991 Aug. 30 (F) and 1992 June 28 (J) to limiting mag about 21. A very faint object is present near the reported position in the USNO-B1.0 catalogue (position end figures 43s.39, 14".4, mag 21) and GSC 2.3 catalogue (position end figures 43s.46, 14".3, mag 20.2-21.0). Yamaoka adds that photometry by H. Maehara shows a short-period (1-2 hr) modulation with amplitude about 0.2 mag. S. Nakano (Sumoto, Japan) reports the following additional magnitudes by Itagaki: Oct. 3.387, 15.0; 9.522, 15.6. Following posting on the Central Bureau's unconfirmed-objects webpage, L. Buzzi (Varese, Italy) reports that his unfiltered CCD image taken with a 60-cm reflector on (presumably) Oct. 5 shows the variable at mag 14.7 and position end figures 43s.51, 14".3. Buzzi also measures red mag 18.2 and position end figures 43s.42, 14".9 from a Palomar Sky Survey (POSS) image taken on 1991 Aug. 30.175 UT, and position end figures 43s.39, 14".7 from a POSS photograph taken on 1993 July 1.332. A. Oksanen, Muurame, Finland, writes that the variable appeared at mag 15.3 with a smooth 0.2-mag variation on presumed-V-band images taken on Oct. 8, also measuring position end figures 43s.57, 14".1; he has posted an image of the variable at http://murtoinen.dyndns.org/ccd/VarDra2008/VarDra2008_20081008C.jpg. R. A. Koff (Bennett, CO, U.S.A.) also reports a photometric amplitude of about 0.2 mag, with average mag 15.6 and position end figures 43s.53, 13".9 on Oct. 8/9. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2008 CBAT 2008 October 10 (CBET 1535) Daniel W. E. Green