SIMBAD references

Toru Yusa, Osaki, Japan, reports his independent discovery of M31N 2011-01a at mag 18.1 on twelve 90-s unfiltered CCD frames (limiting magnitude 20.0) taken around 2011 Jan. 7.39 UT using a 30-m f/7 Cassegrain telescope (+ SBIG STL-1001E camera), providing position end figures 42s.66 ± 0s.02, 14".2 ± 0".2 (offset 19" west, 186" north). Additional magnitudes for M31N 2011-01a from Yusa: 1985 Dec. 17, [20 (Digitized Sky Survey; red plate); 2010 Nov. 5.736, [19.5; 11.376, [19.4; Dec. 17.400, [19.6; 23.357, [19.6; 2011 Jan. 8.086, 18.6 (remotely using a 0.25-m f/3.4 hyperbolic astrograph + SBIG ST-10XME camera at the RAS Observatory near Mayhill, NM, U.S.A.); 8.370, 17.0 (0.30-m f/7 reflector, Osaki Lifelong Learning Center). Yusa's discovery image is posted at http://space.geocities.jp/yusastar77/PNinM31_110107.htm.