Radar observations of asteroid 1 Ceres

Details Radar observations of asteroid 1 Ceres Radar observations of asteroid 1 Ceres

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979icar...40..355o&link_type=abstract

Icarus, vol. 40, Dec. 1979, p. 355-358.

Astronomy and Astrophysics

Astronomy

2

Asteroids, Circular Polarization, Radar Cross Sections, Radar Measurement, Error Analysis, Power Spectra, Radar Astronomy, Radar Echoes, Spectral Reflectance, Asteroids, 1 Ceres Asteroid, Radar, Observations, Reflectivity, Data, Spectrum, Wavelengths, Comparisons, Doppler Effect, Scattering

Scientific paper

Radar observations of asteroid 1 Ceres were made at a 12.6-cm wavelength from the Arecibo Observatory in March/April 1977. The measurements, made with a received circular polarization orthogonal to that transmitted, yield a radar cross section of (0.04 + or- 0.01) piR-squared, for R = 510 km. The corresponding radar reflectivity is less than that measured for any other celestial body. Within the accuracy of measurement, no significant variation of cross section with rotational phase is apparent. The shape of the power spectrum suggests that Ceres is rougher at the scale of the observing wavelength than the moon and inner planets, but smoother than the outer three Galilean satellites.

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