SIMBAD references

Kamil Hornoch, Astronomical Institute, Ondrejov; and Petr Zasche, Astronomical Institute, Charles University, Prague, report their discovery of an apparent nova in the galaxy M31 on a co-added 2160-s R-band CCD frame taken by Zasche on July 8.060 UT with the 0.65-m telescope at Ondrejov. The new object is well visible on single images used for the co-added frame and faintly visible on a pre-discovery co-added R-band CCD frame taken by Hornoch with the same instrumentation on July 7.036 UT, but it is not present on numerous archive images taken at Lelekovice and Ondrejov. M31N 2010-07a is located at R.A. = 0:43:20.13, Decl. = +41:21:23.7 (equinox 2000.0), which is 403" east and 315" north of the center of M31. Available R-band magnitudes for M31N 2010-07a, as measured by Hornoch: July 4.005 UT, [21.1 (K. Hornoch, 0.65-m telescope at Ondrejov); 4.956, [20.9 (Hornoch); 7.036, 20.2 ± 0.3 (Hornoch); 8.060, 18.25 ± 0.1 (P. Zasche, 0.65-m telescope at Ondrejov).