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IAUC 8055: 2003O; FLARING OBJECT IN Ori CLUSTER; C/2002 Y1

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                                                  Circular No. 8055
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 2003O IN UGC 2798
     Doug Rich, Hampden, ME, reports his discovery of an apparent
supernova (mag about 17.0) on an unfiltered CCD frame taken with a
0.26-m reflector on Jan. 18.96 UT, with a confirming image (showing
the new object at mag 16.9) obtained on Jan. 20.15 by M. Schwartz.
SN 2003O is located at R.A. = 3h38m09s.13, Decl. = +40o58'38".0
(equinox 2000.0), which is about 9".8 west and 21".0 south of the
center of UGC 2798.  The new object is not visible on the red/blue
Palomar Sky Survey digital images or on CCD frames taken by Rich on
2002 Sept. 1.20 and Oct. 15.28 (limiting mag 18.0).


FLARING OBJECT IN ORION CLUSTER
     G. C. Bower, R. Plambeck, and A. Bolatto, University of
California at Berkeley, report the discovery on Jan. 20 at 86 GHz
of a flaring object in the Orion cluster, detected with the
Berkeley-Illinois-Maryland Association millimeter-wavelength array
at an average flux density of 104 mJy (with evidence that it
increased from 40 mJy at Jan. 20.188 UT to 143 mJy at Jan. 20.333).
The source was not detected in observations made on 2002 Dec. 23,
2003 Jan. 11, and 14, with 3-sigma upper limits of 6, 12, and 15
mJy, respectively.  Subarcsecond-resolution data yield a position
of R.A. = 5h35m11s.80, Decl. = -5 21'49".2 (equinox 2000.0; error <
0".1).  The source is positionally coincident with radio source A
of Garay et al. (1987, Ap.J. 314, 535) and with infrared source 573
of Hillenbrand and Carpenter (2000, Ap.J. 540, 236).  The object
may be a deeply embedded massive protostar.


COMET C/2002 Y1 (JUELS-HOLVORCEM)
     Ephemeris extension to IAUC 8039 (from revised orbital
elements on MPEC 2003-A85; magnitudes from H = 9.0, n = 3):

2003 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Jan. 21    14 25.27   +31 18.3   1.215   1.658   97.3   36.1   11.1
     26    14 46.31   +36 14.3   1.112   1.587   98.2   37.9   10.7
     31    15 13.33   +41 52.4   1.024   1.515   97.9   40.1   10.4
Feb.  5    15 49.33   +47 57.2   0.956   1.443   96.0   42.8   10.1
     10    16 38.43   +53 51.9   0.912   1.371   92.4   46.0    9.8
     15    17 44.13   +58 33.3   0.893   1.300   87.3   49.4    9.6
     20    19 03.30   +60 50.4   0.900   1.228   81.0   52.7    9.4
     25    20 21.96   +60 15.5   0.929   1.158   74.1   55.3    9.3
Mar.  2    21 26.51   +57 30.1   0.978   1.089   67.1   57.0    9.2

                      (C) Copyright 2003 CBAT
2003 January 22                (8055)            Daniel W. E. Green

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