Electronic Telegram No. 2058 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: M31N 2009-11d Independent discoveries of an apparent nova in M31 have been received from two diffferent groups. Koichi Nishiyama, Kurume, Fukuoka-ken, Japan; and Fujio Kabashima, Miyaki-cho, Saga-ken, Japan, found 2009-11d on seven 40-s unfiltered CCD frames (limiting magnitude 19.8) taken around Nov. 19.488 UT using a 0.40-m f/9.8 reflector. The new object is located at R.A. = 0h44m16s.87, Decl. = +41o18'53".5 (equinox 2000.0), which is 1043" east and 165" north of the center of M31. Nothing is visible at this position on their past frames taken on Nov. 6.526 (limiting mag 19.0) and 17.616 (limiting mag 19.6) or on the Digitized Sky Survey (red and infrared plates; no dates or limiting magnitudes provided). P. Podigachoski, W. Pietsch, M. Henze, and V. Burwitz, Max-Planck-Institut fuer Extraterrestrische Physik; A. Updike, Clemson University; P. Milne and G. Williams, University of Arizona; and D. H. Hartmann, Clemson University, found the object at red mag 18.1 on a stacked R-band CCD image composed of twelve 60-s frames obtained on Nov. 19.194 UT with the robotic 60-cm telescope of the Livermore Optical Transient Imaging System (Super-LOTIS; located at Steward Observatory, Kitt Peak). The new object is clearly visible on the individual images, at position end figures 16s.85, 53".6 (uncertainty 0".3), with offset 1043" east and 165" north. No object is visible at the position of 2009-11d on a Super-LOTIS image from Nov. 18.19 (limiting R magnitude 19.5). K. Hornoch, Astronomical Institute, Ondrejov, Czech Republic; and O. Pejcha, Department of Astronomy, Ohio State University, report low-resolution optical spectroscopy (range 380-720 nm, resolution 0.7 nm) and optical photometry of M31N 2009-11d. Spectra were obtained using the Boller & Chivens CCD Spectrograph on the 2.4-m Hiltner telescope at MDM Observatory. Magnitude measurements were obtained from images taken with RETROCAM on the 2.4-m Hiltner telescope and with the 0.65-m telescope (+ G2CCD-3200) at Ondrejov. The spectrum of M31N 2009-11d obtained by Pejcha on Nov. 21.31 UT (only 2.1 days after its first optical detection made by Pietsch et al.) shows Balmer lines with P-Cyg profiles. One day later, on Nov. 22.21, the Balmer lines showed only an emission component, and Fe II emission lines emerged, confirming this object as a "Fe II"-class nova near maximum light. The HWZI of H-alpha was about 2500 km/s. Magnitudes for 2009-11d: Nov. 21.285, r' = 16.43 +/- 0.08 (Pejcha and Hornoch, 2.4-m telescope + Sloan r' filter); 21.287, g' = 16.53 +/- 0.10 (Pejcha and Hornoch, 2.4-m telescope + Sloan g' filter); 21.799, R = 17.26 +/- 0.10 (Hornoch and P. Kusnirak, 0.65-m Ondrejov telescope); 23.060, R = 17.3 +/- 0.2 (Hornoch). Hornoch also reports position end figures 16s.88, 53".6 for M31N 2009-11d. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2009 CBAT 2009 November 29 (CBET 2058) Daniel W. E. Green