Electronic Telegram No. 3436
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/2013 CE_31 (MOSS)
     S. Nakano, Sumoto, Japan, reports that he has identified observations of
P/2013 CE_31 (cf. CBET 3418) from Spacewatch astrometry (observer J. V. Scotti)
on 2000 Nov. 17 and NEAT/Palomar astrometry on 2002 Mar. 12.  Nakano notes that
the Delta(T) corrections to his most recent orbit from the 2013 data alone were
-1.55 and -1.28 days, respectively, for the 2000 and 2002 observations.

     2000 UT             R.A. (2000) Decl.       Mag.   Observer
     Nov. 17.28372    5 40 47.28   +22 27 42.5   21.9   Scotti
          17.28788    5 40 47.16   +22 27 42.9   21.7     "
          17.29236    5 40 47.05   +22 27 43.5   21.4     "

     2002 UT             R.A. (2000) Decl.       Mag.   Observer
     Mar. 12.13912    9 02 25.62   +21 47 57.1   20.4   NEAT
          12.15989    9 02 25.20   +21 47 58.1   20.1     "
          12.18114    9 02 24.72   +21 47 59.5   19.8     "

After being notified by Nakano, additional NEAT/Palomar observations on four
nights spanning 2002 Feb. 4-Mar. 4, as well as NEAT/Haleakala data from 2002
Feb. 8 and Mar. 16, were found by M. Meyer (Limburg, Germany).  The
following linked orbital elements by G. V. Williams, along with an updated
ephemeris, appear on MPEC 2013-E46.

                    Epoch = 2001 July 30.0 TT
     T = 2001 Aug. 16.07671 TT        Peri. =  26.38564
     e = 0.1752536                    Node  =  87.31876 2000.0
     q = 4.0451449 AU                 Incl. =   4.72079
       a =  4.9047138 AU   n = 0.09073682   P =  10.86 years

                    Epoch = 2012 June  2.0 TT
     T = 2012 May  14.33119 TT        Peri. =  26.66781
     e = 0.1731019                    Node  =  87.17175 2000.0
     q = 4.0137538 AU                 Incl. =   4.72374
       a =  4.8539887 AU   n = 0.09216286   P =  10.69 years


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 March 11                    (CBET 3436)              Daniel W. E. Green