[IAUC] IAUC 8918: C/2007 S11, C/2007 U7-U13, C/2007 V3-V10 [25139-2008/05-R1]

Vie Feb 8 01:20:59 ARST 2008

                                                  Circular No. 8918
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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COMETS C/2007 S11, C/2007 U7-U13, C/2007 V3-V10 (SOHO)
     Further to IAUC 8914, additional near-sun comets have been
found on SOHO website images, as tabulated below; all were Kreutz
sungrazers except for C/2007 S11 (no known group affiliation) and
the Meyer-group objects C/2007 U7 and C/2007 V10.  C/2007 S11 was
tiny, stellar in appearance, and very faint (mag 7.5-8).  C/2007 U7,
C/2007 U11, C/2007 V5, and C/2007 V10 were also tiny, stellar in
appearance, and faint (mag about 7.5); C/2007 V8 was described
similarly by K. Battams (but with mag about 8).  C/2007 V3 was very
diffuse and elongated (mag about 7.5).  C/2007 V6 was very faint
(mag about 8), very diffuse, and elongated.  C/2007 V7 was
extremely faint (mag about 8.5) and very diffuse.  The other seven
objects all appeared stellar in C3 images (C/2007 U8 was of mag
about 6.5, C/2007 U9 was of mag about 7.5, C/2007 U10 was of mag
about 7, C/2007 U12 was of mag about 6, C/2007 U13 and C/2007 V9
were of mag about 6.5, and C/2007 V4 was of mag about 5.5); in C2
images, C/2007 U8 was elongated and somewhat diffuse, C/2007 V4 had
a faint thin tail about 23' long at 5.8 solar radii on Nov. 3.560
UT, and C/2007 V9 was mostly stellar in appearance with a hint of a
short faint tail -- while the remaining four comets were slightly
diffuse (C/2007 U9 being described as faint, and the other three
objects showing a hint of a faint tail).  New finder code:  ZJ = Z.
Jin (cf. IAUC 8365).

 Comet        2007 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2007 S11   Sep. 28.604   12 19.9  - 0 14   C2     RK   2008-A71
 C/2007 U7    Oct. 27.226   14 02.1  -11 09   C2     HS   2008-A71
 C/2007 U8         27.638   13 53.3  -14 36   C3/2   HS   2008-A71
 C/2007 U9         28.154   13 59.9  -14 31   C3/2   HS   2008-A71
 C/2007 U10        28.679   13 59.6  -14 53   C3/2   HS   2008-A72
 C/2007 U11        29.061   14 06.5  -14 28   C2     HS   2008-A72
 C/2007 U12        30.179   14 00.6  -15 53   C3/2   TH   2008-A72
 C/2007 U13        30.763   14 04.9  -15 59   C3/2   MU   2008-A72
 C/2007 V3    Nov.  1.546   14 19.9  -15 38   C2     RM   2008-A75
 C/2007 V4          2.471   14 07.1  -17 57   C3/2   AK   2008-A75
 C/2007 V5          3.576   14 28.5  -16 20   C2     RK   2008-A75
 C/2007 V6          4.643   14 33.4  -16 46   C2     HS   2008-A75
 C/2007 V7          5.671   14 37.1  -17 02   C2     RK   2008-A76
 C/2007 V8          6.143   14 39.6  -17 16   C2     HS   2008-A76
 C/2007 V9          6.196   14 23.8  -19 00   C3/2   RM   2008-A76
 C/2007 V10         9.338   14 53.1  -15 31   C2     ZJ   2008-A76

                      (C) Copyright 2008 CBAT
2008 February 7                (8918)            Daniel W. E. Green