Central Bureau for Astronomical Telegrams

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IAUC 8844: C/2007 A4-A7, C/2007 B4-B6, C/2007 C3-C13

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IAUC number 

                                                  Circular No. 8844
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://www.cfa.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


COMETS C/2007 A4-A7, C/2007 B4-B6, C/2007 C3-C13 (SOHO)
     The "discovery" data for additional near-sun comets found on
SOHO website images are tabulated below (cf. IAUC 8819) -- all
being Kreutz sungrazers except C/2007 A6 and C/2007 C10 (Meyer
group) and C/2007 A7, C/2007 C7, and C/2007 C12 (no known group).
C/2007 A4 and C/2007 A5 were small and stellar in appearance in C3-
coronagraph images; in C2 images, C/2007 A4 was tailless and
slightly diffuse.  C/2007 A6 and C/2007 C10 were small and stellar
in appearance, of mag about 7.  C/2007 A7 was stellar in appearance,
peaking at mag about 6 but dying out rapidly.  C/2007 B6 was
brighter (mag about 5) with a hint of a tail.  C/2007 C3 reached
mag about 4 and showed a very short, faint tail.  C/2007 C6 reached
mag about 3; it showed a very faint, thin tail about 0.5 deg long
in C2 images.  C/2007 C7 peaked at mag 7.5 and faded gradually,
being tiny and stellar in appearance.  C/2007 C11 was stellar in
appearance, reaching mag about 6.  C/2007 C12 was stellar in
appearance with a hint of a tail; it brightened (reaching mag about
7) then died rapidly.  C/2007 C13 was brighter (peaking at mag
about 3.5), showing a short, "headless" tail about 20' long in C2
images.  The remaining six objects appeared stellar and very faint
with no tail.  'MU' = M. Uchina.

 Comet       2007 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2007 A4   Jan.  4.763   19 10.9  -25 19   C3/2   HS   2007-K46
 C/2007 A5         9.446   19 31.7  -23 59   C3     HS   2007-K46
 C/2007 A6        10.938   19 33.3  -21 21   C2     TH   2007-K53
 C/2007 A7        10.314   19 31.0  -23 01   C2     LC   2007-K65
 C/2007 B4        18.096   20 13.3  -22 58   C3     HS   2007-K53
 C/2007 B5        19.179   20 21.6  -23 05   C3     WX   2007-K53
 C/2007 B6        31.113   21 20.2  -20 19   C3/2   HS   2007-K53
 C/2007 C3   Feb.  1.138   21 23.8  -20 07   C3/2   MU   2007-K54
 C/2007 C4         2.971   21 21.7  -18 14   C3     HS   2007-K54
 C/2007 C5         3.679   21 22.5  -17 49   C3     HS   2007-K54
 C/2007 C6         5.846   21 44.0  -19 07   C3/2   BZ   2007-K54
 C/2007 C7         2.663   21 01.9  -18 33   C2     HS   2007-K65
 C/2007 C8         5.821   21 32.4  -17 16   C3     BZ   2007-K65
 C/2007 C9         6.779   21 35.0  -16 47   C3     RM   2007-K65
 C/2007 C10        7.163   21 26.2  -14 03   C2     HS   2007-K65
 C/2007 C11        7.738   21 47.9  -17 17   C3     HS   2007-K66
 C/2007 C12        8.404   21 43.2  -17 46   C3     HS   2007-K66
 C/2007 C13       14.654   22 22.9  -15 10   C3/2   HS   2007-K66

                      (C) Copyright 2007 CBAT
2007 June 10                   (8844)            Daniel W. E. Green

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