Electronic Telegram No. 3153 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 P/2012 M1 = P/2003 O2 (LINEAR) H. Sato (Tokyo, Japan) reports the recovery of comet P/2003 O2 (cf. IAUCs 8172, 8174) on stacked 60-s exposures taken with a 0.51-m f/6.8 astrograph located at the RAS Observatory near Mayhill, NM, U.S.A. He notes a 10" coma on June 18, and an 8" coma with no tail visible on June 20; the total V-band magnitudes listed below are as measured within a circular aperture of radius 4".9. 2012 UT R.A. (2000) Decl. Mag. Observer June 18.43592 2 53 48.47 +23 13 16.2 Sato 18.43928 2 53 49.22 +23 13 19.6 " 18.44264 2 53 49.88 +23 13 23.8 19.3 " 20.43958 3 00 02.78 +23 52 21.2 " 20.44407 3 00 03.58 +23 52 25.7 19.4 " The indicated correction to the prediction by S. Nakano in the International Comet Quarterly's 2011/2012 Comet Handbook (p. H12) is Delta(T) = +0.11 day. The linked orbital elements below by G. V. Williams, along with residuals and an ephemeris, appear on MPEC 2012-M28. Epoch = 2012 June 2.0 TT T = 2012 June 10.75779 TT Peri. = 32.85481 e = 0.6469392 Node = 344.74084 2000.0 q = 1.4989370 AU Incl. = 14.69021 a = 4.2455488 AU n = 0.11266871 P = 8.75 years NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2012 CBAT 2012 June 21 (CBET 3153) Daniel W. E. Green