Electronic Telegram No. 2844 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network VARIABLE STAR IN LYRA: PSN J19234877+3450324 Further to CBET 2772, P. Blanchard, M. Kandrashoff, S. B. Cenko, W. Li, and A. V. Filippenko reported the LOSS discovery on Sept. 2.25 UT of a possible supernova (mag 16.1) located 13" west and 176" north of the center of UGC 11433 on unfiltered KAIT images, with the position given as R.A. = 19h23m48s.77, Decl. = +34d50'32".4 (equinox 2000.0). This object was designated PSN J19234877+3450324 when it was posted on the Central Bureau's TOCP webpage. Additional unfiltered CCD magnitudes for PSN J19234877+3450324: Sep. 1.25, [18.7 (KAIT); 3.24, 15.7 (KAIT); 4.139, 16.7 (R. A. Koff, Bennett, CO, USA; Meade 0.25-m f/10 Schmidt-Cassegrain reflector + Apogee AP-47p CCD camera; image scale 2"/pixel; limiting mag 18.8; position end figures 48s.75, 31".7; UCAC3 reference stars); 6.241, 17.0 (J. Brimacombe, Cairns, Australia; position end figures 48s.78, 31".7). Koff's image is posted at website URL http://antelopehillsobservatory.org/SNpictures/PSNJ19234877+3450324final.jpg; he ran a time series of observations from during Sept. 4.125-4.333, yielding some evidence of periodic behavior; his lightcurve is posted at website URL http://antelopehillsobservatory.org/SNpictures/PSNJ19234877+3450324LC.jpg. Brimacombe's image is posted at the following website URL: http://www.flickr.com/photos/43846774@N02/6122931006/. J. M. Silverman, S. B. Cenko and A. V. Filippenko, University of California, Berkeley, report that inspection of a CCD spectrum (range 340-1000 nm), obtained on Sept. 26 UT with the 10-m Keck I telescope (+ LRIS), shows that PSN J19234877+3450324 is a Galactic variable star with a few narrow absorption features superposed on a relatively smooth continuum. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2011 CBAT 2011 September 29 (CBET 2844) Daniel W. E. Green