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IAUC 8196: 2003hu; 2003he, 2003hs; C/2002 T7

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                                                  Circular No. 8196
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 2003hu
     Further to IAUC 8191, M. Armstrong reports the discovery of an
apparent supernova (mag 18.0) on unfiltered CCD images taken on
Sept. 6.968 and 7.919 UT with a 0.35-m reflector.  The new object
is located at R.A. = 19h11m31s.40, Decl. = +77o53'35".2 (equinox
2000.0), which is approximately 4" west and 2".5 south of the
center of a galaxy that itself is 204" west and 120" south of UGC
11423.  Nothing was visible at the position of SN 2003hu on
Armstrong's images taken on Aug. 4 and 31 (limiting mag 19.5) or on
Palomar Sky Survey red and blue plates.


SUPERNOVAE 2003he AND 2003hs
     R. J. Foley, R. Chornock, and A. V. Filippenko, University of
California, Berkeley; and F. J. D. Serduke, Lawrence Livermore
National Laboratory, report that inspection of CCD spectra (range
310-1000 nm), obtained on Sept. 3 UT with the Shane 3-m telescope
at Lick Observatory, reveal that SN 2003he (IAUC 8182) is of type
Ia, with a spectral-feature age of 9 +/- 2 days past maximum
brightness; the continuum is quite blue, contrary to the
description given on IAUC 8189 (where galaxy contamination was not
properly taken into account).  SN 2003hs (IAUC 8191) is also of
type Ia, but near maximum light.  The spectrum exhibits relatively
strong 580 nm Si II/Ti II absorption relative to the 615-nm Si II
absorption, suggesting that SN 2003hs may be slightly subluminous.


COMET C/2002 T7 (LINEAR)
Ephemeris (H = 5.5, n = 3) from orbital elements on MPEC 2003-R06:

2003 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Aug. 29     5 38.32   +31 12.0   3.931   3.711   70.1   14.8   12.7
Sept. 8     5 40.10   +31 49.0   3.643   3.595   79.3   16.0   12.5
     18     5 39.95   +32 32.2   3.348   3.477   88.9   16.8   12.2
     28     5 37.22   +33 22.6   3.050   3.358   99.1   17.1   11.9
Oct.  8     5 30.97   +34 20.7   2.756   3.237  110.0   16.9   11.5
     18     5 20.05   +35 25.3   2.474   3.114  121.6   15.8   11.2
     28     5 02.96   +36 31.3   2.211   2.990  134.2   13.8   10.8
Nov.  7     4 38.14   +37 26.5   1.978   2.863  147.4   10.7   10.4
     17     4 04.77   +37 48.7   1.787   2.735  159.3    7.3   10.0
     27     3 24.07   +37 08.7   1.650   2.604  161.1    7.0    9.7
Dec.  7     2 40.40   +35 06.6   1.576   2.471  148.7   12.0    9.4

                      (C) Copyright 2003 CBAT
2003 September 7               (8196)            Daniel W. E. Green

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