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IAUC 8426: COMET P/2004 V1 (SKIFF); C/2004 S2, C/2004 S3, C/2004 S4; 2004fe

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                                                  Circular No. 8426
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://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     B. Skiff, Lowell Observatory, reports his discovery of a comet
on LONEOS images obtained on Nov. 4.1 UT (discovery observation
given below) with the 0.59-m Schmidt telescope, the object showing
a moderately condensed coma of diameter 25" and a weak tail 50"
long in p.a. 75 deg.  Following posting on the "NEO Confirmation
Page", B. L. Stevens (Las Cruces, NM, 0.3-m Schmidt-Cassegrain
telescope) reports that his CCD images taken on Nov. 4.2 show a 30"
tail in p.a. 55 deg.

     2004 UT             R.A. (2000) Decl.       Mag.
     Nov.  4.06749   21 08 06.21   - 0 34 05.5   17.9

The available astrometry (including prediscovery LINEAR
observations from Oct. 7 and 18), the following preliminary orbital
elements, and an ephemeris appear on MPEC 2004-V16.

     T = 2004 Dec.  8.861 TT          Peri. = 144.765
     e = 0.69415                      Node  = 242.236   2000.0
     q = 1.41841 AU                   Incl. =  11.467
       a =  4.63754 AU     n = 0.098690     P =   9.99 years

COMETS C/2004 S2, C/2004 S3, C/2004 S4 (SOHO)
     Additional Kreutz sungrazers (continuation to IAUC 8419 and
8423; YT = Y.-s. Tsai):

 Comet        2004 UT      R.A.(2000)Decl.   Inst.  F    MPEC
 C/2004 S2    Sept.20.356  11 27.1  - 0 07   C3     KB  2004-V05
 C/2004 S3         22.959  11 37.5  - 1 08   C3/2   YT  2004-V05
 C/2004 S4         28.529  12 03.0  - 3 16   C3/2   HS  2004-V05

     M. Modjaz, P. Challis, and R. Kirshner, Harvard-Smithsonian
Center for Astrophysics; and T. Matheson, National Optical
Astronomy Observatory, report that a spectrogram (range 390-900 nm)
of SN 2004fe (cf. IAUC 8425), obtained by P. Challis, A. Garg, and
C. Stubbs on Nov. 3.02 UT with the Magellan Clay 6.5-m Telescope (+
LDSS-2), shows it to be a supernova of type Ic.  The spectrum is
similar to spectra of SN 1994I (Filippenko et al. 1995, Ap.J. 450,
L11) taken a few days before maximum.

                      (C) Copyright 2004 CBAT
2004 November 4                (8426)            Daniel W. E. Green

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