Electronic Telegram No. 1973 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 NOVA IN M31: 2009-10b Further to CBET 1971, S. Nakano, Sumoto, Japan, reports that K. Itagaki finds a further brightening of 2009-10b to unfiltered CCD mag 15.0 on Oct. 14.587 and 14.751 UT. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2009 CBAT 2009 October 15 (CBET 1973) Daniel W. E. Green