Circular No. 8062
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVAE 2003X, 2003Y, AND 2003Z
     Three apparent new supernovae have been discovered on
unfiltered CCD images, as tabulated below.  SN 2003X was reported
by T. Boles (cf. IAUC 8059); SN 2003Y was found via LOTOSS/KAIT
(reported by B. Beutler and W. Li; cf. IAUC 8061); and SN 2003Z was
found by Y. L. Qiu and J. Y. Hu, Beijing Astronomical Observatory
(BAO), with the BAO 0.6-m telescope (forwarded by W. Li).

SN      2003 UT       R.A.  (2000.0)  Decl.   Mag.      Offset
2003X   Jan. 28.25  18 12 05.67  +29 09 17.3  17.0   1".3 E, 4".2 S
2003Y   Jan. 29.3    8 54 34.60  +57 10 19.8  17.4   3".7 W, 18".9 N
2003Z   Jan. 29.7    9 07 32.46  +60 29 17.5  16.7   8".4 W, 31".0 N

Additional approximate magnitude estimates:  SN 2003X in UGC 11151,
2002 Oct. 18 UT, [19.0 (Boles); 2003 Jan. 30.166, 17.0 (Boles);
30.529, 16.7 (Boles, from image by M. Schwartz, Cottage Grove, OR).
SN 2003Y in IC 522, 2002 Dec. 25.3, [19.0 (KAIT); 2003 Jan. 30.3,
17.2 (KAIT).  SN 2003Z in NGC 2742, Jan. 20.7, [18.1 (BAO); 30.4,
16.5 (KAIT).


COMET C/2002 X5 (KUDO-FUJIKAWA)
     R. W. Russell, D. K. Lynch, and D. L. Kim, The Aerospace
Corporation; M. L. Sitko, University of Cincinnati; and W. Golisch,
NASA Infrared Telescope Facility (IRTF), report that spectroscopy
of comet C/2002 X5 was obtained on Jan. 9.1 and 10.05-10.14 UT at
1.5-3.4 airmasses with the Aerospace Broadband Array Spectrograph
System at the IRTF 3-m telescope.  They observed a relatively
smooth thermal-emission spectrum, over most of the spectral range
covered (3-14 microns), whose shape resembled a blackbody near or
slightly above the blackbody radiative equilibrium temperature of
340 K.  A silicate emission feature, if present, would be no more
than about 15 percent of the continuum.  A 3.4-micron C-H feature
may be present in emission.  Narrowband magnitudes (each +/- 0.05)
on Jan. 9.1 in a 3".5-diameter aperture were L [3.5 microns] = 8.3,
M [4.5 microns] = 5.8, and N [10.2 microns] = 1.7.  The emission at
10.2 microns was extended at least 18" east-west and 10" north-
south, using a 29" north-south chop.  The beam only needed to be
moved about 3" east-west to get to the half-power location,
suggesting that the infrared emission was concentrated on the peak
with an extended coma component.  On Jan. 10, the spectrum was
essentially unchanged, though perhaps 5 percent brighter.

                      (C) Copyright 2003 CBAT
2003 January 30                (8062)            Daniel W. E. Green