2009CBET.1752....1D

A. J. Drake, A. Mahabal, S. G. Djorgovski, R. Williams and M. J. Graham, California Institute of Technology; E. Y. Hsiao, M. L. Graham and C. J. Pritchet, Department of Physics and Astronomy, University of Victoria; D. Balam, Dominion Astrophysical Observatory, National Research Council of Canada; A. Moskvitin, Special Astrophysical Observatory (SAO), Russian Academy of Sciences; M. Catelan, Pontificia Universidad Catolica; E. C. Beshore, S. M. Larson, Lunar and Planetary Laboratory, University of Arizona; and E. Christensen, Gemini Observatory, report the CRTS (cf. CBET 1744) discovery of an apparent supernova in unfiltered Catalina Sky Survey (CSS) images:

---------------------------------------------------------------------------— SN 2009 UT R.A. (2000.0) Decl. Mag. ---------------------------------------------------------------------------— 2009cb Mar. 19.40 12 59 15.85 +27 16 41.3 19.6 ---------------------------------------------------------------------------—

Follow-up observations were performed with the Palomar 1.5-m reflector (+ Gunn g and r filters), the Plaskett 1.82-m telescope (+ Cousins R_c filter), and the SAO Zeiss-1000 1.0-m telescope (+ R filter). Further magnitudes for 2009cb: Mar. 3.40 UT, [21.2 (CSS); 21.15, g = 19.7, r = 19.6; 23.26, R_c = 19.7; 28.29, 19.9 (CSS); 29.99, R = 19.8. The apparent host galaxy, SDSS J125915.86+271640.7 (which has Gunn magnitudes > 21), is not visible on any of the above images.