Electronic Telegram No. 3384
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 A3 = P/2005 YQ_127 (LINEAR)
     J. V. Scotti, Lunar and Planetary Laboratory, University of Arizona,
reports his recovery of comet P/2005 YQ_127 (cf. IAUCs 8658, 8659) on images
obtained with the Spacewatch 1.8-m f/2.7 reflector (astrometry tabulated
below); the object appeared faint but stellar on both nights (the comet being
only 29 degrees from the moon on the second night).

     2013 UT             R.A. (2000) Decl.       Mag.   Observer
     Jan.  7.10373   22 45 54.50   + 7 59 21.3   21.4   Scotti
           7.11476   22 45 55.54   + 7 59 25.4   21.5     "
           7.12542   22 45 56.59   + 7 59 28.9   21.0     "
          18.09484   23 04 43.57   + 9 13 40.9   20.4     "
          18.09886   23 04 43.96   + 9 13 42.6   20.2     "
          18.10335   23 04 44.47   + 9 13 46.1   20.2     "

The indicated correction to the prediction by B. G. Marsden on MPC 69910 is
Delta(T) = +0.13 day.  The following linked orbital elements by G. V. Williams
from 160 observations spanning 2005 Sept. 15-2013 Jan. 18 (mean residual 0".6),
along with an ephemeris, appear on MPEC 2013-B18.

                    Epoch = 2013 May  28.0 TT
     T = 2013 June  5.91636 TT        Peri. = 152.29349
     e = 0.5045720                    Node  = 276.36168 2000.0
     q = 1.9131998 AU                 Incl. =  16.74768
       a =  3.8617113 AU   n = 0.12987764   P =   7.59 years


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 January 18                  (CBET 3384)              Daniel W. E. Green