Electronic Telegram No. 2801 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/2010 X1 (ELENIN) Michael Mattiazzo, Castlemaine, Victoria. Australia, reports that, following a notable fading of this comet from Aug. 17 to 22, he finds this comet to be continuing to fade and disperse in CCD images, as if it is in the process of disintegrating; his CCD image taken on Aug. 27.37 UT reveals that the nuclear condensation has spread out into an elongated, diffuse smudge, adding that it is reminiscent of comet C/1999 S4. R. H. McNaught confirms this appearance on images taken with the Uppsala Schmidt telescope at Siding Spring, noting that there is absolutely no condensation visible, making astrometry very difficult. Visual total-magnitude and coma-diameter estimates: June 25.93 UT, 10.5, 2'.5 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector; alt. 12 deg); July 20.38, 9.9, 4' (D. A. J. Seargent, Cowra, NSW, Australia, 25.4-cm reflector); 25.40, 10.2, 3' (M. Mattiazzo, Castlemaine, Victoria, Australia, 20-cm reflector); 30.40, 9.5, 4' (Mattiazzo, 25x100 binoculars; zodiacal light); Aug. 3.91, 9.7, 3' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector; moonlight); 7.39, 9.0, 3' (Mattiazzo; moonlight); 16.38, 8.4, 5' (Seargent, 25x100 binoculars); 17.39, 8.2, 4' (Mattiazzo; zodiacal light); 18.30, 8.3, 4' (S. T. Rae, Hamilton, New Zealand, 9x63 binoculars); 19.36, 8.4, 4' (Seargent); 19.39, 8.1, 4' (Mattiazzo; zodiacal light); 20.31, 8.3, 5' (Rae); 21.31, 8.6, 4' (Rae); 22.39, 8.8, 3' (Mattiazzo); 23.39, 8.9, 3' (Mattiazzo). NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2011 CBAT 2011 August 31 (CBET 2801) Daniel W. E. Green