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IAUC 7178: C/1999 K5; 1999cf

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                                                  Circular No. 7178
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)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7244/7440/7444 (for emergency use only)


COMET C/1999 K5 (LINEAR)
     Another apparently asteroidal object discovered by LINEAR
(discovery observation below; additional astrometry on MPEC 1999-
K33), and posted on The NEO Confirmation Page, has been reported as
cometary by several observers.

     1999 UT             R.A. (2000) Decl.        m2
     May  20.31735   19 44 23.12   - 9 15 02.8   17.2

CCD frames taken by D. D. Balam (Victoria) on May 23 show a
condensed coma with a 16" fan-shaped tail in p.a. 303 deg.  On May
24, L. Kornos and P. Koleny (Modra) report a coma diameter of about
15" and a short tail in p.a. 330 deg, and G. Hug (Farpoint
Observatory) indicated a hint of coma in p.a. about 300 deg.
Preliminary parabolic orbital elements by B. G. Marsden:

     T = 2000 July  4.806 TT          Peri. = 241.142
                                      Node  = 106.385   2000.0
     q = 3.27508 AU                   Incl. =  89.495

1999 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
May  22    19 43.74   - 9 24.6   4.331   4.963  123.5    9.8   16.1
June  1    19 38.98   -10 28.1   4.137   4.899  134.3    8.5   16.0
     11    19 32.61   -11 43.2   3.966   4.836  145.4    6.8   15.8
     21    19 24.74   -13 09.6   3.823   4.773  156.7    4.8   15.7
July  1    19 15.61   -14 46.0   3.713   4.711  167.8    2.6   15.6
     11    19 05.58   -16 29.7   3.638   4.650  173.5    1.4   15.5
     21    18 55.16   -18 17.4   3.601   4.589  164.6    3.4   15.4


SUPERNOVA 1999cf IN UGC 8539
     M. Schwartz, Cottage Grove, OR, reports his discovery of an
apparent supernova (mag about 15.9) on an unfiltered CCD frame
(limiting mag about 17) taken with the 0.35-m Tenagra I automated
supernova patrol telescope at Sonoita, AZ, on May 22.27 UT, with a
confirming observation on May 24.13.  SN 1999cf is located at R.A.
= 13h33m29s.71, Decl. = +33o03'22".9 (equinox 2000.0), which is
about 7".9 east and 49".7 north of the center of UGC 8539.  The new
object does not appear on either the first Palomar Sky Survey
digital image or on a CCD frame taken with the same equipment on
1998 June 28.28 (limiting mag 18.5).

                      (C) Copyright 1999 CBAT
1999 May 24                    (7178)            Daniel W. E. Green

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