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IAUC 8626: C/2005 Q7-Q10, R5-R7, S5-S11; V1118 Ori

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IAUC number 

                                                  Circular No. 8626
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)


COMETS C/2005 Q7-Q10, R5-R7, S5-S11 (SOHO)
     Additional comets have been found on SOHO website images (cf.
IAUC 8616; QY = Q. Ye); all were Kreutz sungrazers except for
C/2005 Q8, a Meyer-group object that appeared stellar and showed no
elongation.  All the objects that were visible in C3 images
appeared stellar and tailless therein; peak C3 magnitudes for some
of the objects: C/2005 Q7, 7.3, 12.4 solar radii, Aug. 25.195 UT;
C/2005 Q9, 7.1, 12.2 solar radii, Aug. 30.388; C/2005 Q10, 7.4,
12.4 solar radii, Aug. 30.779; C/2005 R5, 7.4, 12.0 solar radii,
Sept. 6.054; C/2005 R7, 6.6, 12.6 solar radii, Sept. 16.112;
C/2005 S5, 7.7, 11.1 solar radii, Sept. 19.012; C/2005 S6, 6.4,
13.4 solar radii, Sept. 20.779; C/2005 S8, 6.4, 12.9 solar radii,
Sept. 23.935; C/2005 S9, 7.6, 12.5 solar radii, Sept. 24.721;
C/2005 S10, 6.8, 12.2 solar radii, Sept. 25.096.  C/2005 R6 was too
faint for photometry.  C/2005 R7 was faint and diffuse with no tail
in C2 images.  C/2005 S5 was elongated in C2 images.  C/2005 S6 was
faint and diffuse with a hint of a tail in C2 images.  C/2005 S7
was too faint for C3 photometry.  C/2005 S5 and S7-S11 appeared
very faint and diffuse in C2 images.  C/2005 S11 reached mag about
8 in C3 images.

 Comet       2005 UT       R.A.(2000)Decl.  Inst.  F    MPEC
 C/2005 Q7   Aug. 24.571   9 49.1   + 9 30   C3    SF   2005-U71
 C/2005 Q8        25.246  10 11.0   +12 33   C2    HS   2005-U71
 C/2005 Q9        29.696  10 06.7   + 7 55   C3    SF   2005-U71
 C/2005 Q10       30.321  10 12.6   + 7 46   C3    BZ   2005-U71
 C/2005 R5   Sept. 5.863  10 41.2   + 5 45   C3    HS   2005-U72
 C/2005 R6         6.263  10 41.7   + 5 37   C3    HS   2005-U72
 C/2005 R7        15.363  11 05.4   + 1 32   C3/2  HS   2005-U72
 C/2005 S5        18.613  11 26.3   - 0 38   C3/2  HS   2005-U72
 C/2005 S6        20.388  11 28.8   - 0 09   C3/2  HS   2005-U85
 C/2005 S7        23.346  11 44.4   - 0 57   C3/2  QY   2005-U85
 C/2005 S8        23.462  11 38.8   - 1 17   C3/2  HS   2005-U85
 C/2005 S9        24.448  11 46.4   - 1 31   C3/2  HS   2005-U85
 C/2005 S10       24.763  11 46.8   - 1 48   C3/2  TC   2005-U85
 C/2005 S11       25.279  11 51.2   - 1 40   C3/2  HS   2005-U85


V1118 ORIONIS
     E. O. Waagen, AAVSO, reports that this star has remained
bright this year (cf. IAUC 8460); selected magnitude estimates, in
part from Waagen:  Mar. 6.451 UT, 12.7 (P. Williams, Heathcote,
N.S.W.; visual); Apr. 22.388, 12.8 (Williams); Oct. 26.599, V =
14.1 (G. De Scala, Sydney, N.S.W.; CCD); 30.003, 13.7 (J.-C. Merlin,
Le Creusot, France; CCD).

                      (C) Copyright 2005 CBAT
2005 November 3                (8626)            Daniel W. E. Green

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