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IAUC 8156: P/2003 HT_15; 2003gf

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                                                  Circular No. 8156
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 P/2003 HT_15 (LINEAR)
     An apparently asteroidal object reported by LINEAR (discovery
observation below published on MPS 78496; prediscovery LINEAR
observations published on MPS 80247; orbital elements on MPO 48372)
has been found cometary by C. Hergenrother, who reports a diffuse
coma of diameter 15" (and mag 18.6 within an aperture of radius 8")
and a broad tail 60" long in p.a. 115 deg on co-added 900-s R-band
images taken on June 24.3 UT with the Mount Hopkins 1.2-m reflector.

     2003 UT             R.A. (2000) Decl.        m2
     Apr. 26.26123   14 34 17.41   +21 00 35.0   18.3

                    Epoch = 2003 May   1.0 TT
     T = 2003 Apr. 17.7216 TT         Peri. = 124.0498
     e = 0.419870                     Node  =  81.4727  2000.0
     q = 2.671482 AU                  Incl. =  27.6701
       a =  4.604970 AU    n = 0.0997387    P =   9.88 years

2003 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
June 20    14 05.65   +10 43.1   2.116   2.706  114.9   19.9   18.0
     30    14 07.11   + 8 05.1   2.229   2.717  107.7   20.9   18.1
July 10    14 10.65   + 5 25.4   2.353   2.731  100.7   21.5   18.2
     20    14 16.04   + 2 47.0   2.484   2.745   93.8   21.7   18.4
     30    14 23.07   + 0 11.9   2.620   2.762   87.1   21.5   18.5
Aug.  9    14 31.54   - 2 18.6   2.760   2.779   80.5   21.1   18.6
     19    14 41.26   - 4 43.5   2.901   2.798   74.1   20.4   18.8
     29    14 52.08   - 7 02.2   3.041   2.819   67.8   19.4   18.9


SUPERNOVA 2003gf IN MCG -04-52-26
     Further to IAUC 8153, J. Graham and W. Li report the LOTOSS
discovery of an apparent supernova on unfiltered KAIT images taken
on June 24.5 (mag about 14.5) and 25.5 UT (mag about 14.6).  SN
2003gf is located at R.A. = 22h13m40s.94, Decl. = -21o44'03".3
(equinox 2000.0), which is 19".2 east and 3".9 south of the diffuse
nucleus of MCG -04-52-26.  A KAIT image taken on 2002 Dec. 12.2
showed nothing at this position (limiting mag about 19.0).

                      (C) Copyright 2003 CBAT
2003 June 25                   (8156)            Daniel W. E. Green

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