Electronic Telegram No. 3928
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 OE_4
     An apparently asteroidal object (discovery images tabulated below)
reported by the Pan-STARRS program, that was posted on the Minor Planet
Center's NEO Confirmation Page and given the minor-planet designation
2014 OE_4 (orbits on MPEC 2014-O57 and 2014-O70), has been found to be
cometary.  R. J. Wainscoat and M. Micheli report that images obtained with
the Pan-STARRS 1.8-m reflector on July 26 and 28 show that the object
is extended with respect to stellar images: FWHM 1".27 for 2014 OE_4
vs 1".13 for stars on July 26; 1".4 vs. 1"2 on July 28).  D. J. Tholen
reports that his images, obtained in evening twilight with the 2.24-m
University of Hawaii reflector on July 30 and 31, show that 2014 OE_4
is an extended source.

     2013 UT             R.A. (2000) Decl.       Mag.   Observer
     July 26.28251   15 32 28.52   -15 22 47.16  20.7   Pan-STARRS
          26.29446   15 32 28.44   -15 22 45.09  20.8      "
          26.30641   15 32 28.34   -15 22 42.66  20.7      "

G. V. Williams was able to link additional observations of 2014 OE_4 going
back to May 8.  The available astrometry, the following orbital elements
by Williams (from 42 observations spanning 2014 May 8-July 31; mean residual
0".2), and an ephemeris appear on MPEC 2014-P08.

                    Epoch = 2016 Nov. 28.0 TT
     T = 2016 Dec. 10.73533 TT        Peri. =  65.75699
     e = 0.9995837                    Node  = 240.40002 2000.0
     q = 6.2429433 AU                 Incl. =  81.34323


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 August 2                    (CBET 3928)              Michael Rudenko