[IAUC] IAUC 8919: C/2007 V11-V14, C/2007 W4-W12, C/2007 X1-X4 [25139-2008/05-R1]

Vie Feb 8 01:22:01 ARST 2008

                                                  Circular No. 8919
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
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COMETS C/2007 V11-V14, C/2007 W4-W12, C/2007 X1-X4 (SOHO)
     Further to IAUC 8918, additional near-sun comets have been
found on SOHO website images, as tabulated below; all were Kreutz
sungrazers except for C/2007 X1 (no known group affiliation).
C/2007 V11 was bright (mag 4) with a short tail in C3 images; in C2
images, it also showed a short, faint tail.  C/2007 V12 was diffuse
with a hint of faint tail (mag about 7).  C/2007 V13 and C/2007 X2
were extremely faint (mag about 8.5) and diffuse.  C/2007 V14 was
tiny and stellar in appearance (mag about 7.5).  C/2007 W4 and
C/2007 X1 were small and stellar in appearance (mag about 6.5).
C/2007 W5 was tiny, very faint (mag about 8), and slightly diffuse.
C/2007 W6 was tiny, very faint (mag about 7.5), and quite diffuse.
C/2007 W7 was stellar in appearance (mag 6.5) in C3 images, and it
appeared as a bright 'teardrop' in C2 images.  C/2007 W8 was faint
(mag 7.5) and very diffuse.  C/2007 W9 was very small and diffuse
(mag 8).  C/2007 W10 was very diffuse and elongated (mag 7.5).
C/2007 W11 and W12 were small and somewhat diffuse (mag 7).  C/2007
X3 was tiny, faint (mag 7.5), and slightly diffuse.  C/2007 X4 was
stellar in appearance (mag about 5.5) in C3 images, and quite
condensed and teardrop-shaped in C2 images.  New finder code:  MK =
M. Kusiak.

 Comet        2007 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2007 V11   Nov. 10.596   14 38.9  -21 10   C3/2   HS   2008-B09
 C/2007 V12        11.118   14 59.6  -18 41   C2     SY   2008-B09
 C/2007 V13        13.435   15 09.3  -19 26   C2     RK   2008-B09
 C/2007 V14        14.643   15 14.5  -19 44   C2     RK   2008-B09
 C/2007 W4         19.113   15 27.2  -22 21   C3     MA   2008-B10
 C/2007 W5         19.310   15 34.0  -20 57   C2     HS   2008-B10
 C/2007 W6         22.758   15 49.2  -21 48   C2     RK   2008-B10
 C/2007 W7         23.154   15 42.3  -24 10   C3/2   BZ   2008-B10
 C/2007 W8         23.692   15 53.5  -22 03   C2     HS   2008-B10
 C/2007 W9         23.217   15 54.3  -22 09   C2     TH   2008-B35
 C/2007 W10        24.125   15 55.9  -22 11   C2     MK   2008-B35
 C/2007 W11        29.354   16 20.2  -23 20   C2     RK   2008-B35
 C/2007 W12        30.829   16 27.0  -23 34   C2     HS   2008-B35
 C/2007 X1    Dec.  3.064   16 29.0  -21 01   C2     MU   2008-B36
 C/2007 X2          4.713   16 44.9  -24 07   C2     HS   2008-B36
 C/2007 X3          4.814   16 44.2  -24 07   C2     RK   2008-B36
 C/2007 X4          5.388   16 41.8  -26 35   C3/2   HS   2008-B36

                      (C) Copyright 2008 CBAT
2008 February 7                (8919)            Daniel W. E. Green