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IAUC 8192: P/2003 QX_29; 2003ht; 2003hq

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                                                  Circular No. 8192
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)

COMET P/2003 QX_29 (NEAT)
     An apparently asteroidal object reported by NEAT (Palomar
discovery observation below; originally posted on the NEO
Confirmation Page, then assigned the designation 2003 QX_29 on MPEC
2003-Q33; observations on MPS 93475-93476) has been found to have
cometary appearance on CCD images taken by I. Griffin and S. G.
Huerta (Cerro Tololo 0.9-m reflector, Aug. 31.1 UT; visible coma of
red mag 18.0-19.4 with FHWM = 2".3-2".6 in raw 300-s images, while
stacked 10-exposure image shows a fan-shaped tail at least 17" long
in p.a. 58 deg) and by J. Young (Table Mountain 0.6-m reflector,
Sept. 1.2; 3" coma, slightly elongated in p.a. 260 deg, with a 16"
curved tail starting in p.a. 243 deg; possible slight brightening
in the tail at a point 4"-5" from the coma edge).  J. Ticha
subsequently reports that Klet images from Aug. 23.9 show the
object to be slightly diffuse, while on Aug. 24.9 it exhibited a 8"
coma.  Astrometry, orbital elements (T = 2002 Oct. 17.3 TT, Peri. =
37.1 deg, Node = 264.9 deg, i = 11.4 deg, equinox 2000.0, e = 0.445,
q = 4.311 AU, P = 21.6 yr), and an ephemeris appear on MPEC 2003-R14.

     2003 UT             R.A. (2000) Decl.       Mag.
     Aug. 23.28243   22 39 04.71   + 6 41 07.7   19.8

SUPERNOVA 2003ht IN UGC 2457
     Further to IAUC 8191, M. Papenkova and W. Li report the LOTOSS
discovery of an apparent supernova (mag about 18.5) on unfiltered
KAIT images on Sept. 1.5 and 2.5 UT.  SN 2003ht is located at R.A.
= 2h59m55s.17, Decl. = +24o13'36".8 (equinox 2000.0), which is 4".3
east and 5".0 north of the nucleus of UGC 2457.  A KAIT image taken
on Jan. 18.2 (limiting mag about 19.5) and 29.2 (limiting mag about
19.0) showed nothing at this position.

SUPERNOVA 2003hq IN MCG +08-30-27
     R. Chornock, S. Jha, and A. V. Filippenko, University of
California at Berkeley, report that inspection of CCD spectra
(range 320-1000 nm), obtained at the Shane 3-m telescope at Lick
Observatory on Sept. 2.2 UT, reveals that SN 2003hq (IAUC 8191) is
a type-Ia supernova with a spectral-feature age of 4 (+/- 2) days
before maximum light.  The minimum of the strong Si II 635.5-nm
absorption feature is observed at 640 nm, implying a host recession
velocity of approximately 12000 km/s (assuming a normal supernova
expansion velocity of 10000 km/s).

                      (C) Copyright 2003 CBAT
2003 September 2               (8192)            Daniel W. E. Green

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