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IAUC 7200: C/1999 L3; C/1999 L2

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                                                  Circular No. 7200
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 L3 (LINEAR)
     An apparently asteroidal fast-moving LINEAR object, posted on
The NEO Confirmation Page, was noted by F. B. Zoltowski, Woomera,
S. Australia as having a tail about 30" long in p.a. 100 deg and a
rather dense coma on June 13 and 14 CCD images.  P. R. Holvorcem,
Valinhos, Brazil, reports a about 10" coma on his June 12 images.
The discovery observation is given below, and additional astrometry
appears on MPEC 1999-L34.

     1999 UT             R.A. (2000) Decl.       Mag.
     June  9.17148   13 07 18.98   -26 31 47.8   18.3

     Preliminary parabolic orbital elements by B. G. Marsden:

     T = 1999 Dec. 31.319 TT          Peri. = 348.975
                                      Node  = 140.019   2000.0
     q = 2.09910 AU                   Incl. = 166.070

1999 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
June 11    13 03.66   -25 56.2   2.451   3.126  123.3   15.8   16.9
     16    12 54.49   -24 20.9   2.497   3.086  116.4   17.1   16.9
     21    12 46.47   -22 49.7   2.551   3.047  109.7   18.3   16.9
     26    12 39.55   -21 23.9   2.610   3.009  103.1   19.2   16.9
July  1    12 33.64   -20 04.1   2.673   2.970   96.8   19.9   16.9


COMET C/1999 L2 (LINEAR)
     Additional astrometric observations are given on MPEC 1999-L33,
which also contains the following preliminary parabolic orbital
elements:

     T = 1999 Aug.  5.335 TT          Peri. = 179.055
                                      Node  =  94.302   2000.0
     q = 1.90018 AU                   Incl. =  43.911

1999 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
June 11    16 35.40   +15 33.0   1.133   2.021  140.2   18.8   16.3
     16    16 29.54   +12 57.2   1.111   2.000  140.3   18.9   16.2
     21    16 23.95   +10 04.1   1.096   1.982  139.5   19.4   16.2
     26    16 18.83   + 6 56.5   1.088   1.965  138.1   20.2   16.1
July  1    16 14.34   + 3 37.8   1.088   1.950  135.9   21.3   16.1

                      (C) Copyright 1999 CBAT
1999 June 14                   (7200)            Daniel W. E. Green

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