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IAUC 8845: V1280 Sco; C/2006 A8, C/2006 Y10-Y17

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IAUC number 

                                                  Circular No. 8845
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)


V1280 SCORPII
     R. C. Puetter, Center for Astrophysics and Space Science,
University of California at San Diego; R. J. Rudy, D. K. Lynch, R.
W. Russell, S. Mazuk, and R. L. Pearson, The Aerospace Corporation;
C. E. Woodward, University of Minnesota; and R. B. Perry, Langley
Research Center, NASA, report 0.4- to 2.5-micron spectroscopy of
this nova (cf. IAUC 8803, 8807, 8809, 8812) using the Lick 3-m
telescope (+ VNIRIS) on May 6 UT, as well as 0.8- to 5.5-micron
spectroscopy using the Infrared Telescope Facility 3-m telescope (+
SpeX) on May 31.  This nova is still in a very low excitation state,
showing strong C I lines and no discernable He I emission.   The
spectrum shows a significantly narrower [N I] line at 1.04 microns
than the permitted emission lines.  The reddening derived from the
O I lines, which is due in part to the dust shell, is E(B-V) = 1.7.


COMETS C/2006 A8 AND C/2006 Y10-Y17 (SOHO)
     Nine additional near-sun comets have been found on 2006 SOHO
website images (cf. IAUC 8844), all being Kreutz sungrazers except
apparently for C/2006 Y12.  C/2006 A8 was stellar in appearance and
very faint (mag approximately 7-7.5) with no tail.  All of the
remaining objects that were visible in C3 images appeared therein
as small and stellar; all of the remaining objects that were
visible in C2 images appeared therein as tailless and slightly
diffuse, except for C/2006 Y12, which was faint yet more stellar in
appearance and unusually small.  In the table below, new finder 'AW'
= A. Watson.

 Comet        2006 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2006 A8    Jan. 10.013   19 36.4  -24 04   C3     BZ   2007-L16
 C/2006 Y10   Dec. 23.071   18 11.9  -26 33   C3/2   TH   2007-K45
 C/2006 Y11        24.821   18 18.4  -25 34   C3/2   MA   2007-K45
 C/2006 Y12        27.814   18 31.4  -24 40   C2     RK   2007-K45
 C/2006 Y13        28.154   18 35.4  -25 53   C3/2   WX   2007-K45
 C/2006 Y14        28.504   18 34.6  -24 38   C2     RK   2007-K45
 C/2006 Y15        29.179   18 39.4  -25 51   C3/2   WX   2007-K46
 C/2006 Y16        29.413   18 38.6  -24 44   C2     AW   2007-K46
 C/2006 Y17        29.529   18 43.9  -25 44   C3     HS   2007-K46

                      (C) Copyright 2007 CBAT
2007 June 11                   (8845)            Daniel W. E. Green

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