Electronic Telegram No. 601 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 COMET C/2006 Q1 (McNAUGHT) R. H. McNaught reports his discovery of a comet (discovery observation tabulated below) on CCD images obtained with the 0.5-m Uppsala Schmidt in the course of the Siding Spring Survey, noting a ~8" coma in poor seeing. Following position on the NEO Confirmation Page, additional observations were obtained as follows: McNaught (20" coma in deep exposures on Aug. 21.77 UT); S. Bruzzone (Los Molinos, 0.46-m f/2.8 reflector + CCD); C. Jacques and E. Pimentel (CEAMIG-REA Observatory, Belo Horizonte, 0.30-m f/3.0 Schmidt-Cassegrain + CCD); and J. Young (Table Mountain Observatory, Wrightwood, 0.61-m f/16 Cassegrain + CCD). Young described the object as having a round 8" coma with a hint of central condensation, but no tail. CK06Q010 C2006 08 20.74130 05 24 12.81 -25 25 43.5 17.8 T E12 The complete set of observations and a very preliminary orbit are published on MPEC 2006-Q22. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2006 CBAT 2006 August 23 (CBET 601) Gareth V. Williams