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IAUC 8956: V2670 Oph; C/2008 E7-E9, C/2008 G3,, C/2008 G4; 200P

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IAUC number

                                                  Circular No. 8956
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)

     R. W. Russell, R. J. Rudy, D. K. Lynch, and A. M. Gilbert, The
Aerospace Corporation; and C. E. Woodward, University of Minnesota,
report 0.8- to 5.5-micron spectroscopy of V2670 Oph (cf. IAUC 8947,
8948, 8949) on June 14 UT using SpeX at the Infrared Telescope
Facility.  V2670 Oph (Nova Oph 2008 No. 1) displays a generally
low-excitation spectrum with lines of neutral carbon, nitrogen,
oxygen, and sodium, and singly ionized iron and calcium.   V2670
Oph is probably an "Fe II"-type nova; it has distinct, tiered line
profiles comprised of both narrow (FWHM = 1100 km/s) and broad
(FWHM = 3000 km/s) components.  The O I lines that are
fluorescently excited by Lyman_beta are the strongest lines in the
infrared spectrum and indicate a reddening of E(B-V) approximately
1.3.  There is no evidence at present for dust formation.

COMETS C/2008 E7-E9, C/2008 G3, AND C/2008 G4 (SOHO)
     Further to IAUC 8955, additional apparent comets have been
found on SOHO website images; all are Kreutz sungrazers except for
C/2008 E7 (non-group).  C/2008 E8 was small, stellar in appearance,
and of mag about 7.  C/2008 E7 was visible in C3 images for a day
and a half (peaking at mag about 6 around Mar. 5.33 UT) before
cutting across the C2 field-of-view and fading out; it was basically
stellar in appearance, though it may have been slightly diffuse and
marginally elongated (when it was very faint) in C2 images.  C/2008
E9 was very faint (mag about 7-7.5) and slightly diffuse in C3
images, and very diffuse and elongated in C2 images.  C/2008 G3 was
very diffuse and very faint (mag about 8).  C/2008 G4 was small,
condensed, and teardrop-shaped (mag about 7).

 Comet        2008 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2008 E7    Mar.  4.638   22 56.0  - 4 27   C3/2   HS   2008-L26
 C/2008 E8          7.071   23 30.0  - 6 03   C3*    HS   2008-L27
 C/2008 E9         12.029   23 45.8  - 3 58   C3/2*  BZ   2008-L27
 C/2008 G3    Apr.  1.979    0 55.3  + 4 20   C2     HS   2008-L27
 C/2008 G4          9.493    1 22.6  + 7 00   C2     MK   2008-L27

     Comet P/2008 L1 = 1997 V1 (cf. IAUC 8952) has been assigned
the number 200P (cf. MPC 63085).

                      (C) Copyright 2008 CBAT
2008 June 20                   (8956)            Daniel W. E. Green

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