2010CBET.2343....1B

V. Burwitz, Max-Planck-Institut fuer Extraterrestrische Physik (MPE); Observatorio Astronomico de Mallorca (OAM); W. Pietsch and M. Henze, MPE; J. Rodriguez, OAM; and C. A. Haswell, S. Holmes, U. Kolb, and R. Lucas, The Open University (TOU), report the discovery of an apparent nova (R magnitude 17.8) in M31 on a stack of five 120-s unfiltered CCD images obtained with the 0.35-m f/11 TOU/OAM "PIRATE" Schmidt-Cassegrain telescope (+ SBIG STL-1001E CCD camera) at Costitx, Mallorca, on June 26.084 UT. The new object, designated M31N 2010-06c, is located at R.A. = 0:44:04.48, Decl. = +41:28:34.2 (equinox 2000.0; uncertainty 0".3), which is 902" east and 746" north of the core of M31. No object is visible at this position on a PIRATE image taken on June 17.093 (limiting R mag 19.0). M31N 2010-06c is clearly detected in the individual images. All measured magnitudes are from a photometric solution using R magnitudes of the Local Group Survey M31 catalogue of Massey et al. (2006, A.J. 131, 2478).