Electronic Telegram No. 2421 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 POSSIBLE SUPERNOVA NEAR NGC 1120 S. Nakano, Sumoto, Japan, reports the discovery by Koichi Itagaki (Teppo-cho, Yamagata) of an apparent supernova (mag 17.6) on unfiltered CCD frames (limiting magnitude 19.5) taken on Aug. 20.696 and 21.777 UT using a 0.60-m f/5.7 reflector (+ Bitran BT-214E camera). The new object is located at R.A. = 2h49m10s.81 +/- 0s.01, Decl. = -14d26'59".8 +/- 0".3 (equinox 2000.0), which is 97" east and 65" south of the center of NGC 1120 (but also near another faint galaxy, so spectroscopy may be necessary to determine the host galaxy). Nothing is visible at this position on Itagaki's past frames (including one from 2000 Nov. 23.60 at limiting mag 19.0) or on the Digitized Sky Survey. The discovery image is posted at website URL http://www.k-itagaki.jp/images/psn-1120.jpg. Toru Yusa, Osaki, Japan, reports confirmation of the variable at mag 16.8 on unfiltered CCD frames (limiting mag 19.0) taken remotely using a 0.25-m f/3.4 refrector (+ SBIG ST-10XME camera) at the RAS Observatory near Mayhill, NM, U.S.A., on Aug. 21.412, yielding position end figures 10s.78, 59".8. Yusa has posted his photograph at URL http://space.geocities.jp/yusastar/PSNinN1120_100821.htm. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2010 CBAT 2010 August 22 (CBET 2421) Daniel W. E. Green