Electronic Telegram No. 1020
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


2007 DT103
     L. A. M. Benner, S. J. Ostro, J. D. Giorgini, J. Van Brimmer, L. Juare,
J. S. Jao, R. F. Jurgens, and M. A. Slade, Jet Propulsion Laboratory,
California Institute of Technology (CIT); and M. W. Busch, CIT, report that
Goldstone (8560-mHz, 3.5-cm) radar observations during July 26, 28, and Aug.
1 reveal that minor planet 2007 DT103 (cf. MPEC 2007-F20; MPO 121877) is a
binary system.  Preliminary estimates for the component diameters are about
0.3 km and > 80 m.  The maximum orbital distance between the components is
at least 0.45 km.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2007 CBAT
2007 August 3                    (CBET 1020)              Daniel W. E. Green