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IAUC 7222: 1999 N2; C/1999 N3

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                                                  Circular No. 7222
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 1999 N2
     Daniel W. Lynn, Kinglake West, Victoria, Australia, reports
his visual discovery of a comet using handheld 10x50 binoculars.
The following observations have been reported:

     1999 UT             R.A. (2000) Decl.        m1    Observer
     July 13.451      9 41.0       -16 30         8.0   Lynn
          13.951      9 47.5       -15 25         7.0   Neto
          14.37580    9 52 03.27   -14 29 18.8    8.3   Zoltowski
          14.37842    9 52 05.19   -14 28 57.6            "
          14.38241    9 52 08.06   -14 28 26.1            "
          14.38673    9 52 11.21   -14 27 51.4            "
          14.39091    9 52 14.25   -14 27 17.8            "
          14.394      9 52.4       -14 25         8.0   Lynn
          14.39624    9 52 18.12   -14 26 35.1          Zoltowski
          14.40275    9 52 22.83   -14 25 43.1            "
          14.40995    9 52 28.05   -14 24 45.4            "

D. W. Lynn (near Melbourne).  10x50 binoculars and 0.20-m f/6
  reflector (40x, 150x).  Comet low in sky, moving northeastward at
  about 10'/hr.  Coma diameter 4'.2, fairly strong central
  brightening, but no discernible nuclear condensation and no tail.
V. F. de Assis Neto (Sao Francisco de Oliveira, Minas Gerais,
  Brazil).  10x70 binoculars.  Communicated by C. Jacques.
F. B. Zoltowski (Woomera).  0.30-m f/10 Schmidt-Cassegrain
  reflector + CCD.  Fairly dense coma of diameter about 2'; narrow
  tail > 20' long in p.a. 140 deg; m_2 = 11.6-12.1.


COMET C/1999 N3 (SOHO)
     D. A. Biesecker, SM&A Corporation and Goddard Space Flight
Center, reports observations of another apparent Kreutz sungrazing
comet that he discovered in images taken with the C3 coronagraph
aboard SOHO.  Astrometric measurements made by Biesecker (and
reduced by B. G. Marsden), together with orbital elements by
Marsden, are given on MPEC 1999-N24.

     1999 UT            R.A. (2000) Decl.
     July 9.363        7 00.2       +19 40

                      (C) Copyright 1999 CBAT
1999 July 14                   (7222)            Daniel W. E. Green

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