[IAUC] IAUC 9050: C/2009 K5; P/2009 K1; C/2001 D1 = C/2004 X7 = C/2008 S2 = C/1997 J6 [25139-2009/08-R1]

Vie Mayo 29 13:14:56 ART 2009

                                                  Circular No. 9050
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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COMET C/2009 K5 (McNAUGHT)
     R. H. McNaught reports his discovery of a comet on CCD images
obtained with the 0.5-m Uppsala Schmidt telescope at Siding Spring
(discovery observation tabulated below), the object being slightly
diffuse with a diameter of 10".  After posting on the Minor Planet
Center's 'NEOCP' webpage, C. Jacques and E. Pimentel (Belo
Horizonte, Minas Gerais, Brazil, 0.30-m f/3 reflector, May 28.34-
28.35 UT) find that the comet shows a condensed coma of diameter
20".  G. Sostero, E. Guido, P. Camilleri, and E. Prosperi report
that sixteen stacked 60-s unfiltered exposures, obtained remotely
with a 0.35-m f/7 reflector at the Skylive-Grove Creek Observatory
(near Trunkey, Australia) on May 28.5 under good seeing conditions,
show that this object has a small, compact coma nearly 6" in
diameter, with a hint of elongation toward the northeast.

     2009 UT             R.A. (2000) Decl.       Mag.   Observer
     May  27.60529   19 45 35.31   -74 00 35.4   17.7   McNaught

The available astrometry, the following preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2009-K67.

     T = 2010 Apr. 18.616 TT          Peri. =  67.954
                                      Node  = 259.967   2000.0
     q = 1.35690 AU                   Incl. = 101.624

COMET P/2009 K1 (GIBBS)
     As predicted on IAUC 9044, additional astrometry has shown
this comet to be of short period; orbital elements from MPEC
2009-K48:  T = 2009 June 25.934 TT, q = 1.32261 AU, e = 0.63948,
Peri. = 27.086, Node = 172.802, i = 5.745 (equinox 2000.0), P =
7.03 years.

COMET C/2001 D1 = C/2004 X7 = C/2008 S2 = C/1997 J6 (SOHO)
     Further to IAUC 8986, R. Kracht has identified very weak
images of a presumed comet on SOHO images from 1997 that he and
B. G. Marsden have linked (via measurements by K. Battams) to the
comets in 2001, 2004, and 2008 with nongravitational forces.

 Comet        1997 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/1997 J6    May  1.917     2 29.7  +14 25    C2    RK   2009-H56

                      (C) Copyright 2009 CBAT
2009 May 29                    (9050)            Daniel W. E. Green