2010CBET.2566....1F

T. A. Fatkhullin, V. N. Komarova, A. S. Moskvitin, V. V. Sokolov, and T. N. Sokolova, Special Astrophysical Observatory (SAO), Russian Academy of Sciences; and A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J. Graham, and R. Williams, California Institute of Technology, report the discovery of two supernovae in the course of the Mt. Lemmon Survey.

---------------------------------------------------------------------------— SN 2010 UT R.A. (2000.0) Decl. Mag. Offset ---------------------------------------------------------------------------— 2010kj Nov. 2.32 2 48 37.15 + 7 24 10.8 18.5 1" E, 1" S 2010kk Nov. 8.36 3 53 23.23 + 9 54 33.3 20.2 0".5 W ---------------------------------------------------------------------------—

Catalina Sky Survey (CSS) magnitudes for 2010kj: Oct. 11.36 UT, [20.1; 28.37, 19.1; Nov. 17.16, 18.0; 28.31, 18.9. Nothing was visible at the position of 2010kk on a CSS image from 2009 Nov. 22.36 (limiting mag 21.2). Spectroscopy was obtained of both objects with the SAO's BTA 6-m reflector (+ SCORPIO; range 380-790 nm) on Nov. 15 UT. Cross-correlation of the spectra with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that both are normal type- Ia supernovae. SN 2010kj is similar to SN 1995D at around four days after maximum with redshift 0.064 ± 0.002 (according to broad lines in the spectrum), and 2010kk is similar to SN 1994ae around six days after maximum at redshift 0.213 ± 0.005.