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IAUC 8242: 2003kc; 2003jz, 2003ka,, 2003kb; C/2003 T4

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IAUC number


                                                  Circular No. 8242
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)


SUPERNOVA 2003kc IN MCG +05-23-37
     Further to IAUC 8241, J. Burket and W. Li report the LOSS
discovery, on unfiltered KAIT images taken on Nov. 21.6 (mag about
18.8) and 22.6 UT (mag about 18.1), of a supernova located at R.A.
= 9h46m34s.32, Decl. = +30o39'19".0 (equinox 2000.0), which is 5".4
west and 8".2 north of the nucleus of MCG +05-23-37.  A KAIT image
taken on Apr. 2.2 showed nothing at this position (limiting mag
about 19.5).
     R. J. Foley, B. J. Swift, and A. V. Filippenko, University of
California, Berkeley, report that inspection of CCD spectra (range
330-1000 nm), obtained on Nov. 22 UT with the Shane 3-m telescope
at Lick Observatory, reveals that SN 2003kc is of type Ia, similar
to SN 1991T (Filippenko et al. 1992, Ap.J. 384, L15).  Strong Fe
III features suggest that it is near maximum brightness.


SUPERNOVAE 2003jz, 2003ka, AND 2003kb
     Foley et al. add that inspection of CCD spectra, obtained as
above on Nov. 22 UT, reveals that SN 2003kb (IAUC 8241) is probably
of type Ia, about 2 weeks past maximum brightness.
     T. Matheson, P. Challis, and R. Kirshner, Harvard-Smithsonian
Center for Astrophysics, write that a spectrum (range 370-750 nm)
of SN 2003jz (cf. IAUC 8241), obtained by L. Macri on Nov. 20.50 UT
with the F. L. Whipple Observatory 1.5-m telescope (+ FAST
spectrograph), shows it to be a type-Ia supernova a few weeks past
maximum.  A spectrum of SN 2003ka (cf. IAUC 8241), also obtained by
Macri on Nov. 20.50, shows it to be a peculiar type-II supernova.
Adopting the NASA/IPAC Extragalactic Database recession velocity of
5761 km/s for the host galaxy, the expansion velocity derived from
the minimum of the H_beta line is 8300 km/s.


COMET C/2003 T4 (LINEAR)
     Improved parabolic orbital elements from MPEC 2003-W12:

     T = 2005 Apr.  3.1380 TT         Peri. = 181.8410
                                      Node  =  93.8487  2000.0
     q = 0.844473 AU                  Incl. =  86.7148

                      (C) Copyright 2003 CBAT
2003 November 22               (8242)            Daniel W. E. Green

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