Electronic Telegram No. 3478
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/2013 G9 (TENAGRA)
     An apparently asteroidal object reported by M. Schwartz and P. R.
Holvorcem on images obtained with the Tenagra II 0.41-m f/3.75 astrograph
located near Nogales, AZ, U.S.A. (discovery observation tabulated below) has
been found (after posting on the Minor Planet Center's NEOCP webpage) to show
cometary appearance on twelved stacked 50-s R-band images obtained by P.
Campbell, N. Howes, and E. Guido obtained remotely with the 2.0-m "Faulkes
Telescope North" located at Haleakala, HI, on Apr. 18.4 UT, the object noted
as having a compact coma about 5" in diameter (of mag 18.8-19.1), elongated
toward p.a. 110 deg.

     2013 UT             R.A. (2000) Decl.       Mag.   Observer
     Apr. 15.39231   16 50 42.39   - 1 58 45.1   19.6   Schwartz
          15.41053   16 50 41.68   - 1 58 43.1   19.5     "
          15.42498   16 50 41.12   - 1 58 41.9   20.0     "

The available astrometry, the following preliminary parabolic orbital
elements by G. V. Williams, and an ephermeris appear on MPEC 2013-H23.

     T = 2015 Jan. 24.0804 TT         Peri. = 207.8497
                                      Node  =  36.0851  2000.0
     q = 5.172306 AU                  Incl. = 145.9053


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 April 19                    (CBET 3478)              Daniel W. E. Green