Electronic Telegram No. 4121
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


2014 YB_35
     S. P. Naidu, L. A. M. Benner, M. Brozovic, J. D. Giorgini, J. S. Jao,
C. G. Lee, L. G. Snedeker, and K. J. Lawrence, Jet Propulsion Laboratory,
California Institute of Technology; and M. W. Busch, SETI Institute, write
that Goldstone radar (8560-MHz) range-Doppler images and echo power spectra
obtained on Mar. 20 UT reveal that the near-Earth minor-planet 2014 YB_35
(cf. MPEC 2014-Y89) is a binary system.  Visible range extents in images with
a range resolution of 75 m suggest the diameters of the primary and the
satellite to be about 300 m and < 150 m, respectively.  The satellite moved
3 range pixels over about one hour.  The bandwidths of the primary and the
satellite in the echo power spectra are about 10 Hz and < 1 Hz,
respectively.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2015 CBAT
2015 July 25                     (CBET 4121)              Daniel W. E. Green