Electronic Telegram No. 3537
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 K2 = p/2003 U2 (LINEAR)
     H. Sato (Tokyo, Japan) reports his recovery of comet P/2003 U2 (cf. IAUC
8229) on CCD images obtained remotely with a 0.51-m f/6.8 astrograph of
iTelescope.net located near Mayhill, NM, U.S.A., on May 18 and 19 (later
identifying pre-recovery observations from images taken in poor conditions
on May 8 (when the comet showed no obvious coma in four stacked 60-s
exposures).  On May 18, the comet was poorly condensed with a coma 10" in
diameter and no obvious tail, the measurement being somewhat difficult due to
its diffuseness, and the V-band magnitudes beings measured within a circular
aperture of radius 8".2.  On May 19, the comet was moderately condensed with
a coma 12" to 15" in diameter.  M. Masek (Liberec, Czech Republic) obtained
images with a 0.3-m f/10 reflector at Malarque, Argentina, on May 23, noting
a diffuse coma of diameter 5" and no tail.

     2013 UT             R.A. (2000) Decl.       Mag.   Observer
     May   8.45156   23 53 21.49   + 9 35 10.6          Sato
           8.45242   23 53 21.61   + 9 35 11.6   18.5     "
          18.43597    0 19 55.16   +10 59 47.4            "
          18.43853    0 19 55.51   +10 59 48.9   18.3     "
          19.43458    0 22 36.07   +11 07 41.9            "
          19.43672    0 22 36.43   +11 07 42.9            "
          19.43886    0 22 36.80   +11 07 43.8   18.2     "
          21.43705    0 27 59.18   +11 23 17.2            "
          21.43961    0 27 59.57   +11 23 18.0   18.4     "
          23.40240    0 33 17.16   +11 38 09.3   19.1   Masek
          23.41001    0 33 18.37   +11 38 12.3   19.0     "
          23.41763    0 33 19.67   +11 38 14.8   19.0     "

The indicated correction to the prediction by B. G. Marsden on MPC 69910
is Delta(T) = -0.17 day.  The following linked orbital elements by G. V. William
are from 105 observations 2003 Sept. 19-2013 May 2 (mean residual 0".6):

                    Epoch = 2013 July  7.0 TT
     T = 2013 June 28.85458 TT        Peri. = 177.46675
     e = 0.6235621                    Node  = 186.38865 2000.0
     q = 1.6907514 AU                 Incl. =  24.60170
       a =  4.4914486 AU   n = 0.10354388   P =   9.519 years


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 May 24                      (CBET 3537)              Daniel W. E. Green