[IAUC] CBET 1020: 20070803 : 2007 DT103

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                                                  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 en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
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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.


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