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IAUC 8801: C/2007 B3; C/2006 P1; P/2007 B1; V1065 Cen

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                                                  Circular No. 8801
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     G. J. Garradd reports his discovery of a comet with a faint
coma extending 10" to the northwest on Siding Spring Survey images
obtained with the 0.5-m Uppsala Schmidt telescope (discovery
observation tabulated below).  Following posting on the Minor
Planet Center's 'NEOCP' webpage, R. Ligustri (Udine, Italy) writes
that his CCD images from Jan. 27.45 and 27.51 UT (taken remotely
with a 0.25-m reflector at Mayhill, NM, U.S.A.) show a 22" coma of
total mag 17.6-17.7.  C. Hergenrother adds that a co-added 600-s
R-band image taken on Jan. 29.51 with the Catalina 1.54-m telescope
shows this object to be a comet with a coma 8" in diameter and a
tail 40" long in p.a. 305 deg.

     2007 UT             R.A. (2000) Decl.       Mag.
     Jan. 25.70262   13 06 35.64   -32 03 38.8   18.0

The available astrometry, the following preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2007-B72.

     T = 2006 Mar. 26.525 TT          Peri. = 180.462
                                      Node  = 331.645   2000.0
     q = 3.98319 AU                   Incl. =  30.196

     B. G. Marsden reports that the "original" and "future" 1/a
values for this comet were calculated as +0.000016 and +0.000476
(+/- 0.000024) AU**-1, respectively, from the full orbital elements
published on MPC 58538.  The comet was thus probably dynamically
"new" in the Oort sense.

     Further to IAUC 8797, J. Young reports that a Table Mountain
exposure taken by D. Mayes on Jan. 20.38 UT shows a bright round
coma with a central condensation of diameter 4"; the 8" tail in
p.a. 225-260 deg was brightest around its southern part.

     Further to IAUC 8800, W. Liller writes that exposures taken by
G. Addiego and W. Fonseca in Uruguay on Jan. 21.035 and 21.042 UT
clearly show prediscovery images of V1065 Cen at magnitude V = 7.6
+/- 0.2.

                      (C) Copyright 2007 CBAT
2007 January 29                (8801)            Daniel W. E. Green

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