Electronic Telegram No. 142 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) CBAT@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html SUPERNOVA 2005bo IN NGC 4708 N. Morrell, G. Folatelli, C. Contreras, and M. Hamuy, Las Campanas Observatory, report that an optical spectrum (range 380-920 nm) of SN 2005bo (cf. IAUC 8514), obtained in the course of the Carnegie Supernova Project on Apr. 18.23 UT with the Las Campanas 2.5-m du Pont telescope (+ WFCCD spectrograph), reveals it to be a normal type-Ia supernova at about maximum light. The expansion velocity derived from the minimum of the Si II 635.5-nm line is 10700 km/s, assuming the recession velocity for NGC 4708 given by the NED database. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the formal IAU Circulars. (C) Copyright 2005 CBAT 2005 April 19 (CBET 142) Daniel W. E. Green