Electronic Telegram No. 534
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://cfa-www.harvard.edu/iau/cbat.html


2006 GY2
     L. A. M. Benner, Jet Propulsion Laboratory (JPL); M. C. Nolan,
Arecibo Observatory; M. K. Shepard, Bloomsburg University of
Pennsylvania; J. D. Giorgini and S. J. Ostro, JPL; M. W. Busch,
California Institute of Technology; and A. A. Hine, Arecibo Observatory,
report that Arecibo and Goldstone delay-Doppler radar observations of
2006 GY2 on May 15-16 show that this Apollo-type minor planet (cf.
MPEC 2006-G37) is a binary system.  Preliminary estimates for the
diameters are 400 m for the primary and 80 m for the secondary.  The
maximum orbital distance between the components is at least 500 m.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2006 CBAT
2006 June 2                      (CBET 534)               Daniel W. E. Green