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IAUC 8224: C/2003 T4; 2003is; P/2003 S2

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IAUC number 

                                                  Circular No. 8224
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)


COMET C/2003 T4 (LINEAR)
     An apparently asteroidal object reported by LINEAR (discovery
observation below), and posted on the NEO Confirmation Page, has
been found to show cometary appearance by several CCD astrometric
observers, including J. E. McGaha (Tucson, AZ, 0.62-m reflector;
Oct. 14.4 UT, coma diameter 6" with a fan-shaped tail 12" long in
p.a. 75 deg), P. R. Holvorcem and M. Schwartz (Tenagra 0.81-m
reflector at Nogales, AZ; Oct. 14.4 and 15.4, co-addition of three
180-s exposures on each night shows a coma of diameter about 5" and
total mag 17.7-18.3), G. R. Jones (Tucson, AZ, 0.32-m reflector;
Oct. 15.4, coma diameter 2", slightly elongated toward p.a. 40 deg),
and J. Young (Table Mountain, CA, 0.6-m reflector; Oct. 15.5, 6"
diffuse coma surrounding a very small central core).

     2003 UT             R.A. (2000) Decl.        m1
     Oct. 13.44804    8 19 11.42   +65 42 51.2   19.7

The available astrometry, the following very uncertain
parabolic orbital elements, and an ephemeris appear on MPEC
2003-T76.

     T = 2003 Oct. 13.401 TT          Peri. =  44.700
                                      Node  =  91.925   2000.0
     q = 8.42743 AU                   Incl. =  82.024


SUPERNOVA 2003is IN MCG +07-40-3
     Further to IAUC 8221, B. Beutler and W. Li report the LOTOSS
discovery of an apparent supernova (mag about 18.0) on unfiltered
KAIT images taken on Oct. 14.1 and 15.1 UT.  SN 2003is is located
at R.A. = 19h21m08s.00, Decl. = +43o19'35".4 (equinox 2000.0),
which is 3".9 west and 3".6 north of the nucleus of MCG +07-40-3.
A KAIT image taken on Oct. 4.1 showed nothing at this position
(limiting mag about 19.5).


COMET P/2003 S2 (NEAT)
     Revised orbital elements from MPEC 2003-T68:

     T = 2003 Sept. 8.245 TT          Peri. = 284.544
     e = 0.35817                      Node  =  87.731   2000.0
     q = 2.45688 AU                   Incl. =   7.637
       a =  3.82791 AU     n = 0.131602     P =   7.49 years

                      (C) Copyright 2003 CBAT
2003 October 15                (8224)            Daniel W. E. Green

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