Electronic Telegram No. 2209 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 SUPERNOVA 2010aj IN MCG -01-32-35 S. B. Cenko, B. E. Cobb, I. K. Kleiser, and A. V. Filippenko, University of California, Berkeley, report that inspection of a CCD spectrum (range 350-1000 nm), obtained on Mar. 15 UT with the 3-m Shane reflector (+ Kast) at Lick Observatory, reveals that 2010aj (CBET 2201) has a strong blue continuum, with broad absorption features that are indicative of a young type-II supernova. Cross-correlation with SNID (cf. Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that SN 2010aj is most similar to the type-II-P supernova 2006bp near maximum brightness. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2010 CBAT 2010 March 17 (CBET 2209) Daniel W. E. Green