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THE ASTRONOMER Electronic Circular No 1330      1998 Aug 21 19.00UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK             GMH at AST.STAR.RL.AC.UK
WORLD WIDE WEB                    http://www.demon.co.uk/astronomer
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SUPERNOVA 1998dk IN UGC 139
     J. Y. King, M. Modjaz, T. Shefler, E. Halderson, W. D. Li,
R. R. Treffers, and A. V. Filippenko, University of California at
Berkeley, report their discovery of an apparent supernova during
the course of the Lick Observatory Supernova Search (cf. IAUC 6627)
with the 0.8-m Katzman Automatic Imaging Telescope (KAIT).  SN
1998dk was found and confirmed in unfiltered CCD images obtained on
Aug. 19.4 (mag about 17.6) and 20.4 UT (mag about 17.0).  The new
object is located at R.A. = 0h14m32s.16, Decl. = -0o44'10".9
(equinox 2000.0), which is about 5".4 east and 3".1 north of the
nucleus of UGC 139.  A KAIT image obtained on Aug. 15.4 shows no
star at this position (limiting mag about 18.5).
IAUC 6991 (extract)

SUPERNOVA 1998dl IN NGC 1084
     J. Y. King, M. Modjaz, T. Shefler, E. Halderson, W. D. Li,
R. R. Treffers, and A. V. Filippenko, University of California at
Berkeley, report their discovery of an apparent supernova during
the course of the Lick Observatory Supernova Search (cf. IAUC 6627)
with the 0.8-m Katzman Automatic Imaging Telescope (KAIT).  SN
1998dl was found on an unfiltered image taken on Aug. 20.5 UT (mag
about 16.0), and was confirmed on earlier images taken on Aug. 2.5
(mag about 16.0) and 9.5 (mag about 15.9).  The new object is
located at R.A. = 2h46m01s.47, Decl. = -7o34'25".1 (equinox
2000.0), which is about 21".6 east and 11".6 north of the nucleus
of NGC 1084.  A KAIT image taken on 1997 Dec. 26.2 shows no star at
this position (limiting mag about 18.0).  SN 1996an and SN 1963P
also appeared in NGC 1084.
IAUC 6992 (extract)

COMET C/1998 P1 (WILLIAMS)
     Improved parabolic orbital elements from MPEC 1998-Q10/IAUC 6991

     T = 1998 Oct. 17.836 TT          Peri. = 294.466
                                      Node  = 156.376   2000.0
     q = 1.14678 AU                   Incl. = 145.729

1998 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Aug  20    14 13.39   -54 22.7   1.141   1.472   86.0   43.3    8.5
     25    13 59.65   -49 48.4   1.237   1.426   78.0   43.9    8.5
     30    13 50.75   -45 56.9   1.336   1.382   70.6   43.6    8.5
Sept. 4    13 44.75   -42 42.0   1.436   1.341   63.7   42.4    8.6
      9    13 40.55   -39 56.9   1.534   1.302   57.2   40.6    8.6
     14    13 37.54   -37 35.5   1.628   1.267   51.1   38.2    8.6
     19    13 35.33   -35 33.2   1.716   1.236   45.2   35.3    8.6
     24    13 33.67   -33 45.7   1.797   1.209   39.7   32.0    8.6
     29    13 32.38   -32 10.0   1.870   1.186   34.3   28.4    8.6
Oct.  4    13 31.35   -30 43.5   1.934   1.168   29.3   24.7    8.6
IAUC 6991 (extract)

Martin Mobberley