Electronic Telegram No. 2296 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Room 209; Dept. of Earth and Planetary Sciences; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbat@iau.org; cbatiau@eps.harvard.edu URL http://www.cfa.harvard.edu/iau/cbat.html SUPERNOVAE 2010de-2010dl [Editor's note: this text replaces that on CBET 2295; the declination signs for 2010de and 2010dl were in error.] Further to CBETs 2234 and 2287, 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 several apparent supernovae in unfiltered Catalina Sky Survey (CSS) images taken with the 0.7-m and 1.5-m telescopes: SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010de Apr. 10.45 16 12 29.20 - 0 44 41.1 17.4 0".6 E, 1".0 N 2010df May 5.30 12 58 39.67 - 3 26 43.1 18.9 1".7 W, 2".7 N 2010dg May 7.23 10 34 04.31 +38 32 30.4 19.2 2".1 W, 12".2 N 2010dh May 9.24 10 56 37.19 +20 14 41.9 18.0 12".2 W, 2".7 S 2010di May 12.19 8 52 47.28 +53 14 06.1 18.7 2".4 W, 1".8 N 2010dj May 12.28 11 57 34.72 +24 42 27.7 18.5 1".5 W, 2".0 N 2010dk May 16.29 14 28 56.16 +20 19 04.0 19.3 1".4 W, 0".5 S 2010dl May 24.45 21 35 00.97 - 0 30 47.8 16.4 8".7 E, 6".5 S Further magnitude estimates (CSS unless noted otherwise) for 2010de: 2009 Oct. 18.14 UT, [18.5 (Mount Lemmon Survey); 2010 Mar. 11.46, 17.8; 21.49, 17.4; Apr. 8.49, 17.4. Further CSS magnitude estimates for 2010df: Apr. 15.35, [19.8; May 16.23, 19.2. Further CSS magnitude estimates for 2010dg: Feb. 17.30, [20.5; Mar. 17.21, 18.8; Apr. 11.15, 19.0; May 21.21, 19.8. Further CSS magnitude estimates for 2010dh in PGC 1621290: Mar. 25.24, [19.5; Apr. 9.23, 18.1; 17.23, 17.2. Further CSS magnitude estimates for 2010di: Mar. 18.22, [20.2; Apr. 12.22, 18.5. Further CSS magnitude estimates for 2010dj: Apr. 17.26, [20.0; May 25.25, 18.9. Further CSS magnitude estimates for 2010dk: Apr. 15.45, [20.5; May 9.31, 19.3. Further magnitude estimates for 2010dl in IC 1391: 2009 Nov. 19.08, [19.0 (CSS); 2010 May 26.4, 16.7 (J. Brimacombe, Cairns, Australia; r-band images taken remotely with a telescope near Mayhill, NM, U.S.A.). NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2010 CBAT 2010 May 29 (CBET 2296) Daniel W. E. Green