SIMBAD references

Independent discovery reports have been received for an apparent supernova in NGC 2797. Further to CBET 2130, X. Parisky, S. B. Cenko, W. Li, and A. V. Filippenko, University of California, report the LOSS discovery of the new object, designated 2010Z, on unfiltered KAIT images. Also, Simone Leonini, Siena, Italy, reports the discovery of 2010Z on an unfiltered CCD image (limiting mag about 18.8) taken during his supernova search program using a 0.53-m f/7.8 Ritchey-Chretien telescope (+ Apogee Alta U47 CCD camera) at the Montarrenti Observatory. The discovery observations are tabulated below:

---------------------------------------------------------------------------— 2010 UT R.A. (2000.0) Decl. Mag. Offset Observer ---------------------------------------------------------------------------— Feb. 3.34 9 16 21.30 +17 43 40.6 16.7 5".4 W, 2".4 N KAIT Feb. 8.896 9 16 21.25 +17 43 42.4 15.6 8" W, 4" N Leonini ---------------------------------------------------------------------------—

Additional approximate magnitudes for 2010Z: 2008 Dec. 30.039, [18.5 (Leonini); 2010 Jan. 15.43 UT, [18.1 (KAIT); Feb. 5.51, 17.0 (J. Brimacombe, Cairns, Australia; co-added image from six 600-s unfiltered images taken remotely with a 0.5-m telescope located near Mayhill, NM, U.S.A.). Leonini adds that nothing is visible at this position on Palomar Sky Survey infrared, red, and blue plates.