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IAUC 8786: P/2006 Y1; C/2003 B3

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IAUC number 

                                                  Circular No. 8786
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


COMET P/2006 Y1 (KORLEVIC-JURIC)
     E. J. Christensen reports his recovery of comet P/1999 DN_3
(cf. IAUC 7167) on CCD images obtained with the 1.5-m reflector at
Mt. Lemmon, with his astrometry provided below.  On Dec. 16.4 UT,
60-s images obtained in average seeing showed a moderately
condensed 5" coma with a 15" tail in p.a. 270 degrees.  Four
co-added 60-s images obtained the following night in poor seeing
confirm a faint 10" tail in p.a. 260 degrees.

     2006 UT             R.A. (2000) Decl.       Mag.
     Dec. 16.36258    7 31 34.32   +45 48 08.8   20.0
          16.36796    7 31 34.06   +45 48 10.0
          16.37348    7 31 33.81   +45 48 10.9
          16.37911    7 31 33.60   +45 48 12.2
          17.28139    7 30 55.98   +45 51 21.3   20.7
          17.28505    7 30 55.83   +45 51 21.4   20.5
          17.28874    7 30 55.69   +45 51 22.2   20.5
          17.29240    7 30 55.58   +45 51 23.1   20.7

The indicated correction to the prediction on MPC 54168 is Delta(T)
= -2.0 days.  The following linked orbital elements are by B. G.
Marsden:

                    Epoch = 1998 Sept.24.0 TT
     T = 1998 Sept.30.4678 TT         Peri. = 161.2491
     e = 0.135043                     Node  =   5.9549  2000.0
     q = 3.907590 AU                  Incl. =  18.7192
       a =  4.517671 AU    n = 0.1026437    P =   9.602 years

                    Epoch = 2008 May  14.0 TT
     T = 2008 May   8.7944 TT         Peri. = 161.6439
     e = 0.135853                     Node  =   5.8430  2000.0
     q = 3.893755 AU                  Incl. =  18.7301
       a =  4.505892 AU    n = 0.1030464    P =   9.565 years


COMET C/2003 B3 (SOHO)
     Another Kreutz sungrazing comet found on SOHO website images
(cf. IAUC 8783), being of stellar appearance (mag about 7.5-8):

 Comet        2003 UT      R.A.(2000)Decl.   Inst.  F    MPEC
 C/2003 B3    Jan. 22.696  20 32.4  -21 22   C3     HS   2006-X25

                      (C) Copyright 2006 CBAT
2006 December 20               (8786)            Daniel W. E. Green

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