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IAUC 8755: C/2006 S5; P/2006 S6; 2006gi

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IAUC number


                                                  Circular No. 8755
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 C/2006 S5 (HILL)
     R. E. Hill reports his discovery of a comet on images taken in
the course of the Catalina Sky Survey with the 0.68-m Schmidt
telescope (discovery observation tabulated below), the object
described as having a tail about 10" long to the southwest.

     2006 UT             R.A. (2000) Decl.       Mag.
     Sept.28.28000    0 50 22.81   +19 01 40.8   18.6

Additional astrometry reported following posting on the 'NEO
Confirmation Page', the following preliminary parabolic orbital
elements, and an ephemeris appear on MPEC 2006-S84.

     T = 2007 Dec. 24.713 TT          Peri. = 183.411
                                      Node  = 283.471   2000.0
     q = 2.54479 AU                   Incl. =  10.189


COMET P/2006 S6 (HILL)
     Hill reports his discovery of another comet on images taken
with the Catalina 0.68-m Schmidt telescope, this one having a tail
about 10"-15" long to the west-southwest.

     2006 UT             R.A. (2000) Decl.       Mag.
     Sept.28.40022    3 04 27.33   +25 59 37.4   18.7

Additional astrometry reported following posting on the 'NEO
Confirmation Page' [including prediscovery observations from
Catalina (Aug. 29, Sept. 18) and from LINEAR (Sept. 18)], the
following elliptical orbital elements, and an ephemeris appear on
MPEC 2006-S85.

     T = 2006 Oct. 18.054 TT          Peri. =  31.181
     e = 0.42491                      Node  =   9.070   2000.0
     q = 2.39862 AU                   Incl. =  13.178
       a =  4.17087 AU     n = 0.115708     P =   8.52 years


SUPERNOVAE 2006gi IN NGC 3147
     G. Duszanowicz, Akersberga, Sweden, provides the following
prediscovery unfiltered CCD red magnitudes of 2006gi (cf. IAUC
8751):  Aug. 31.89 UT, 18.1; Sept. 12.88, 16.1; 14.97, 16.0.

                      (C) Copyright 2006 CBAT
2006 September 29              (8755)            Daniel W. E. Green

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