Electronic Telegram No. 2808 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network COMET C/2011 Q1 (McNAUGHT) R. H. McNaught reports his discovery of another comet on CCD images taken with the 0.5-m Uppsala Schmidt telescope (discovery observation tabulated below), the object showing a basically circular coma about 12" across, possibly elongated toward the northwest with a suggestion of a tail about 0'.2 long toward the northwest; the comet is strongly condensed. After posting on the Minor Planet Center's NEOCP webpage, P. Birtwhistle reported a slightly cometary appearance, as well, from his images taken on Sept. 5.1 UT with a 0.40-m f/6 Schmidt-Cassegrain reflector. 2011 UT R.A. (2000) Decl. Mag. Observer Sept. 3.71539 3 02 39.74 -15 10 18.8 16.5 McNaught The available astrometry, the following preliminary parabolic orbital elements by G. W. Williams, and an ephemeris appear on MPEC 2011-R20. T = 2012 Nov. 13.235 TT Peri. = 296.647 Node = 221.560 2000.0 q = 2.68973 AU Incl. = 115.713 NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2011 CBAT 2011 September 5 (CBET 2808) Daniel W. E. Green