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IAUC 8451: COMET P/2004 VR_8 (LONEOS); C/2004 T6, T7, U4-U12

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                                                  Circular No. 8451
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/2004 VR_8 (LONEOS)
     An apparently asteroidal object discovered by LONEOS,
designated 2004 VR_8 (cf. MPS 118755, MPEC 2004-V48; discovery
observation below), has been found to show a 10"-diameter coma and
a tail 16" long in p.a. 140 deg on R-band CCD observations taken by
C. W. Hergenrother (Lunar and Planetary Laboratory) with the 1.54-m
Kuiper reflector at Catalina on Nov. 19.3 UT.  Also, A. Nakamura
(Kuma, Ehime, Japan) reports that 240-s unfiltered CCD frames taken
with a 0.60-m reflector on Dec. 8.55 and 9.55 shows to object's
image to be slightly 'softer' than other field stars of similar
brightness, and a possible very faint tail is visible to the
southeast.

     2004 UT             R.A. (2000) Decl.       Mag.
     Nov.  3.34556    4 06 43.25   +13 00 34.1   17.6

Additional astrometry, the following orbital elements, and an
ephemeris appear on MPEC 2004-X36.

     T = 2005 Sept. 2.6732 TT         Peri. =  63.1296
     e = 0.510185                     Node  =  71.2066  2000.0
     q = 2.375895 AU                  Incl. =  20.1326
       a =  4.850593 AU    n = 0.0922597    P =  10.68 years


COMETS C/2004 T6, T7, U4-U12 (SOHO)
     Additional SOHO Kreutz sungrazers (continuation to IAUC 8427;
HO = H. Otterstedt, XG = X. Gao):

 Comet        2004 UT      R.A.(2000)Decl.   Inst.  F    MPEC
 C/2004 T6    Oct. 10.238  12 47.0  - 8 07   C3/2   HS  2004-X23
 C/2004 T7         13.431  12 49.4  - 9 59   C3/2   TH  2004-X23
 C/2004 U4         17.288  13 22.8  -10 16   C2     BZ  2004-X23
 C/2004 U5         21.096  13 30.2  -13 25   C3/2   HO  2004-X23
 C/2004 U6         21.646  13 42.7  -12 20   C2     RK  2004-X23
 C/2004 U7         22.413  13 41.8  -12 10   C2     XG  2004-X23
 C/2004 U8         23.529  13 32.2  -13 59   C3/2   XL  2004-X24
 C/2004 U9         24.929  13 36.8  -14 39   C3/2   TH  2004-X24
 C/2004 U10        26.521  13 59.4  -13 47   C3/2   JS  2004-X24
 C/2004 U11        26.904  13 42.6  -15 31   C2     HS  2004-X24
 C/2004 U12        28.104  14 05.8  -14 20   C2     BZ  2004-X24

                      (C) Copyright 2004 CBAT
2004 December 10               (8451)            Daniel W. E. Green

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