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IAUC 8281: S/2003 J 23; 2004Q; 2003lt, 2004R

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                                                  Circular No. 8281
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)

S/2003 J 23
     Further to IAUC 8276, the discovery of a new satellite of
Jupiter has been reported on CCD images taken with three telescopes
at Mauna Kea by a team led by S. S. Sheppard.  Astrometry,
preliminary orbital elements by B. G. Marsden, and an ephemeris
appear on MPEC 2004-B81 (e = 0.31, i = 149 deg, P = 759 days, H =

     Further to IAUC 8277, J. Burket and W. Li report the LOSS
discovery, on KAIT images taken on Jan. 30.5 and 31.5 UT, of an
apparent supernova (mag about 18.4) located at R.A. = 12h47m40s.11,
Decl. = -26o12'23".3 (equinox 2000.0), which is 2".5 west and 24".1
south of the nucleus of ESO 507-G11.  A KAIT image taken on 2003
June 6.2 showed nothing at this position (limiting mag about 19.0).

     L. Strolger and A. Riess, Space Telescope Science Institute,
report the discovery of two apparent supernovae found in the
observations of the Ultra Deep Field (UDF) and UDF Parallel fields
on CCD images taken with the Advanced Camera for Surveys (ACS) on
the Hubble Space Telescope.  SN 2004R, which was detected by
subtracting groups of z-band (F850LP) ACS images of the same
fields, is located at R.A. = 3h32m31s.30, Decl. = -27o46'13".6
(equinox 2000.0), which is 0".13 west and 0".10 south of the center
of the apparent host galaxy.  This new object was found in sixteen
independent detection images taken during Jan. 2-11 and was not
seen in images taken during 2003 Dec. 24-30 (limiting mag 28.5).
The morphology of the transient is consistent with the ACS point-
spread function (FWHM 0".1) and the lack of a detectable motion (<
0".05) relative to other sources over several hours of observation.
Available z-band magnitude estimates:  Jan. 10.44 UT, 27.2; 13.04,
     SN 2003lt was detected in eight separate exposures obtained
during 2003 Aug. 30-Sept. 1, and it is located at R.A. =
3h32m42s.81, Decl. = -27o55'53".1 (equinox 2000.0), which is 0".13
east and 0".50 north of the center of its apparent host galaxy.
Available z-band magnitudes for SN 2003lt:  2003 Feb. 10.12 UT,
[28.5, Sept. 1.89, 26.0; 13.62, 26.2.

                      (C) Copyright 2004 CBAT
2004 February 4                (8281)            Daniel W. E. Green

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