Electronic Telegram No. 3968
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


COMET C/2014 R1 (BORISOV)
     G. Borisov reports the discovery of a comet on three CCD images obtained
with the 30-cm f/1.5 astrograph of the MARGO observatory, Nauchnij, Russia
(discovery observations tabulated below).  The object showed a coma of
diameter about 30" and a tail 40" long.

     2014 UT             R.A. (2000) Decl.       Mag.   Observer
     Sept. 5.05347    8 26 55.33   +19 04 58.0   16.0   Borisov
           5.06822    8 26 58.13   +19 04 53.0   15.9     "
           5.08055    8 27 00.52   +19 04 47.8   15.9     "

After the object was posted on the Minor Planet Center's PCCP webpage, F.
Kugel, Banon, France, reported that unfiltered CCD images taken by C. Rinner
and himself on Sept. 5.13 UT with a 0.4-m f/3 reflector (+ Atik 460ex camera)
at the Observatoire Chante-Perdrix (Dauban) show a coma around 20" in
diameter and a tail about 0'.6 long toward p.a. 290 degrees; Kugle has posted
an image of the comet viewable via website URL http://tinyurl.com/lsttmho.
     The available astrometry, the following preliminary parabolic orbital
elements, and an ephemeris appear on MPEC 2014-R64.  The comet may be of
short period.

     T = 2014 Oct. 20.4041 TT         Peri. =  28.7403
                                      Node  = 104.1124  2000.0
     q = 1.616736 AU                  Incl. =   9.0690


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 September 7                 (CBET 3968)              Daniel W. E. Green