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IAUC 8955: V2467 Cyg; C/2008 D5-D9; C/2008 E5, C/2008 E6

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IAUC number

                                                  Circular No. 8955
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://www.cfa.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     D. K. Lynch, R. W. Russell, and R. J. Rudy, The Aerospace
Corporation; and C. E. Woodward, University of Minnesota, report
0.8- to 5.5-micron spectroscopy of V2467 Cyg (cf. IAUC 8905) on
June 15 UT using SpeX on the Infrared Telescope Facility.  The nova
has persisted in a very high state of excitation, and its spectrum
is dominated by coronal lines.  The [Mg VIII] line at 3.03 microns
is the brightest feature in the infrared spectrum, and lines from
four separate ionization states of silicon are present ([Si VI],
[Si VII], [Si IX], [Si X]).  Other species displaying coronal lines
include [P VIII], [S VIII], [S IX], [Ca VII], [Ca VIII], and
possibly [Ni X].  The thermal infrared continuum remains free of
dust emission.

COMETS C/2008 D5-D9 (SOHO)
     Further to IAUC 8953, additional apparent comets have been
found on SOHO website images; all are Kreutz sungrazers except for
C/2008 D6 (Meyer group).  C/2008 D5 and C/2008 D7 were small,
stellar in appearance, and of mag about 7.  C/2008 D6 was elongated
but not diffuse (mag about 7).  C/2008 D8 was slightly diffuse and
very faint (mag 7.5).  C/2008 D9 was slightly diffuse and small
(mag 7) in C3 images, but very diffuse and very faint in C2 images.
An asterisk in the instrumentation column below indicates that
astrometry was also obtained from STEREO-A/SECCHI HI1 images (see
IAUC 8926).

 Comet        2008 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2008 D5    Feb. 19.029   22 23.1  -12 41   C3     HS   2008-L19
 C/2008 D6         19.171   22 12.8  -10 00   C2     TH   2008-L19
 C/2008 D7         25.554   22 51.5  - 9 54   C3*    BZ   2008-L19
 C/2008 D8         24.554   22 43.7  -10 03   C3*    BZ   2008-L26
 C/2008 D9         29.238   22 08.4  - 9 00   C3/2*  BZ   2008-L26

COMETS C/2008 E5 AND C/2008 E6 (STEREO)
     Further to IAUC 8926, additional very faint (mag about 11)
Kreutz sungrazers have been found on STEREO website images:

 Comet        2008 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2008 E5    Mar.  5.517    0 54.2  + 1 44   HI     AW   2008-K29
 C/2008 E6         15.017    1 28.6  + 5 05   HI     RK   2008-K29

                      (C) Copyright 2008 CBAT
2008 June 20                   (8955)            Daniel W. E. Green

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