2010CBET.2224....1D

Further to CBET 2208, A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J. Graham, and R. Williams, California Institute of Technology; J. L. Prieto, Carnegie Observatories; M. Catelan, Pontificia Universidad Catolica de Chile; E. C. Beshore and S. M. Larson, Lunar and Planetary Laboratory, University of Arizona; and E. Christensen, Gemini Observatory, report the CRTS discovery of an apparent supernova in unfiltered Catalina Sky Survey (CSS) images:

---------------------------------------------------------------------------— SN 2010 UT R.A. (2000.0) Decl. Mag. ---------------------------------------------------------------------------— 2010ay Mar. 17.38 12 35 27.19 +27 04 02.8 17.5 ---------------------------------------------------------------------------—

Further CSS magnitudes for 2010ay: Feb. 17.45 UT, [18.3; Mar. 5.45, 18.2. The supernova is not resolved from the galaxy in CSS images (it is located within an arcsecond of the host galaxy's center, perhaps slightly toward the northwest); however, the object matches the star forming galaxy SDSS J123527.19+270402.7 (the SDSS gunn magnitudes are u = 19.6, g = 19.0, r = 19.0, i = 18.7, z = 18.9, and the spectroscopic redshift is z = 0.067).