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S. J. Ostro, L. A. M. Benner, D. Choate, C.R. Franck, R. Frye, J. D. Giorgini, R. F. Jurgens, D. Kelley, R. Rose, K. D. Rosema, M. A. Slade, M. L. Thomas, R. Winkler, D. K. Yeomans (JPL-Caltech), R. S. Hudson (Wash. State)
We obtained echoes from nine NEAs during this period. The following table presents some of our astrometric results. Each entry gives the time delay or Doppler frequency for echoes from the target's center of mass, received at the specified UTC epoch. Stated errors incorporate uncertainties in target dimensions. Observations used 8510-MHz transmissions from DSS-14 and reception at DSS-14 or DSS-13, as indicated. Each antenna's reference point is the intersection of the elevation and azimuthal axes. Here 1 us corresponds to 150 m in range and 1 Hz corresponds to 1.76 cm/s in radial velocity.
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The author(s) of this abstract have provided an email address for comments about the abstract: ostro@echo.jpl.nasa.gov