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IAUC 8198: 2003hw; 2003hv; 2003ho; C/2002 T7

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IAUC number 

                                                  Circular No. 8198
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 2003hw
     Further to IAUC 8197, J. Graham and W. Li report the LOTOSS
discovery of an apparent supernova (mag about 18.3) on unfiltered
KAIT images taken on Sept. 8.5 and 10.5 UT.  SN 2003hw is located
at R.A. = 3h01m50s.02, Decl. = +35o44'36".4 (equinox 2000.0), which
is 2".9 east and 2".1 north of the nucleus of a galaxy that itself
is 49" west and 35" north of the nucleus of UGC 2491.  A KAIT image
taken on Feb. 19.2 showed nothing at this position (limiting mag
about 19.0).


SUPERNOVA 2003hv IN NGC 1201
     A. Dressler, M. Phillips, N. Morrell, and M. Hamuy, Carnegie
Observatories, report that a spectrum (range 390-1007 nm) of SN
2003hv (cf. IAUC 8197), obtained at Las Campanas Observatory on
Sept. 10.36 UT with the Baade 6.5-m telescope (+ IMACS), shows it
to be a type-Ia supernova.  The spectrum bears strong resemblance
to that of SN 1994D taken two days after maximum.  The minimum of
the Si II 635.5-nm line yields an expansion velocity of -10800 km/s
(adopting the NED host-galaxy recession velocity of 1671 km/s).


SUPERNOVA 2003ho IN ESO 235-G58
     M. Hamuy and M. Roth, Carnegie Observatories, report that a
spectrum (range 360-900 nm) of SN 2003ho (cf. IAUC 8186), obtained
on Sept. 7.04 UT with the Clay 6.5-m telescope (+ LDSS-2) at Las
Campanas, shows that this is a normal type-II supernova with a red
continuum and broad Balmer P-Cyg lines.  The minimum of the H_beta
absorption yields an expansion velocity of -5420 km/s (assuming the
NED recession velocity of 4265 km/s for the host galaxy), which
suggests that the supernova is probably one month old.


COMET C/2002 T7 (LINEAR)
     Total visual magnitude estimates:  Aug. 2.03 UT, 23.09, 13.0
(K. Hornoch, Lelekovice, Czech Republic, 0.35-m reflector); 26.78,
12.2 (K. Yoshimoto, Yamaguchi, Japan, 0.25-m reflector); 27.14,
12.9 (J. J. Gonzalez, Leon, Spain, 0.20-m reflector); 28.98, 12.2
(V. S. Nevski, Vitebsk, Belarus, 0.30-m reflector); Sept. 4.77,
12.7 (S. Yoshida, Gunma, Japan, 0.25-m reflector); 6.96, 12.3 (S.
E. Shurpakov, Baran, Belarus, 0.41-m reflector).

                      (C) Copyright 2003 CBAT
2003 September 11              (8198)            Daniel W. E. Green

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