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THE ASTRONOMER Electronic Circular No 2358      2007 Jly 21 11.24UT
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      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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COMET C/2007 N3 (LULIN)
Quanzhi Ye, Sun Yat-sen University, China, reports the discovery of an
apparent asteroidal object on images obtained by Chi Sheng Lin, Taiwan
with the 0.41-m f/8.8 Ritchey-Chretien reflector in the course of the
Lulin Sky Survey:
     2007 UT             R.A. (2000) Decl.       Mag.
     July 11.77867   22 33 35.14   - 8 46 38.8   18.9
J. Young at Table Mountain has found it to have a marginal cometary
appearance.

The following orbital elements are taken from MPEC 2007-030:
T 2009 Jan. 14.952 TT                                   MPC
q   1.24318              (2000.0)            P               Q
                   Peri.  136.387       -0.925116       -0.379550
                   Node   338.687       -0.355548       +0.856646
e   1.0            Incl.  178.404       -0.133214       +0.349427
>From 89 observations 2007 July 11-19.

Giovanni Sostero and Ernesto Guido, Italy have submitted an image to
TAHQ which was obtained on July 15.0 by the stacking of 133 unfiltered
exposures of 60 seconds each using a 0.45-m reflector + CCD. The comet
shows a very small, well condensed coma. It should be noted the comet is
still over 6AU from the Sun and could become a relatively bright object
in 2009.

COMET C/2007 O1 (LINEAR)
An apparently asteroidal object discovered by the LINEAR survey
and posted on the Minor Planet Center's 'NEOCP' webpage, has been found
to show cometary appearance by several CCD observers including Ernesto
Guido and Giovanni Sostero.

Peter Birtwhistle (Great Shefford, Berkshire, England, 0.40-m f/6
Schmidt-Cassegrain reflector) reports that his images from July 17.9
show that the object appears diffuse and circular, with a concentrated
centre and diameter 10", adding that no tail was visible, but that such
detection is very much hampered by the rich star field.
Discovery position:
     2007 UT             R.A. (2000) Decl.       Mag.
     July 17.22525   19 06 37.31   -17 23 57.3   17.2

Guy M Hurst