2010CBET.2567....1H

S. Howerton, Arkansas City, KS, U.S.A.; 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 two apparent supernovae in public images from the Catalina Sky Survey (CSS) 1.5-m telescope.

---------------------------------------------------------------------------— SN 2010 UT R.A. (2000.0) Decl. Mag. Offset ---------------------------------------------------------------------------— 2010kl Nov. 16.47 11 27 17.48 + 3 45 33.3 18.9 0".3 W, 10".0 N 2010km Dec. 4.33 2 55 12.81 +24 38 13.1 18.8 9".1 E, 3".3 N ---------------------------------------------------------------------------—

SN 2010kl is not seen co-added Mt. Lemmon Survey (MLS) images reaching mag 22.5 or in Sloan Digital Sky Survey DR7 images reaching a similar depth; its presumed host galaxy (CGCG 39-184) has redshift z = 0.035. Further magnitudes for 2010kl: May 5.15 UT, [20.5 (MLS); Dec. 1.45, 19.2 (CSS). SN 2010km is not seen in MLS co-added images reaching mag 22.0; its presumed host galaxy (CGCG 484-24) has redshift z = 0.023. Further magnitudes for 2010km: Nov. 17.19 [19.5 (CSS); Nov. 28.35, 19.2 (CSS); Dec. 5.31, 18.7 (MLS).