Radar detection of PHOBOS

Details Radar detection of PHOBOS Radar detection of PHOBOS

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989sci...243.1584o&link_type=abstract

Science (ISSN 0036-8075), vol. 243, March 24, 1989, p. 1584-1586.

Astronomy and Astrophysics

Astronomy

6

Phobos, Radar Astronomy, Radar Detection, Satellite Surfaces, Astronomical Spectroscopy, Polarization Characteristics, Radar Echoes, Mars, Satellites, Phobos, Radar Methods, Physical Properties, Surface, Wavelengths, Roughness, Regolith, Comparisons, Spectra, Density, Topography, C Asteroids, Earth-Based Observations, Procedure

Scientific paper

Radar echoes from the martian satellite Phobos provide information about that object's surface properties at scales near the 3.5-cm observing wavelength. Phobos appears less rough than the moon at centimeter-to-decimeter scales. The uppermost few decimeters of the satellite's regolith have a mean bulk density within 20 percent of 2.0 g/cu cm. The radar signature of Phobos (albedo, polarization ratio, and echo spectral shape) differs from signatures measured for small, earth-approaching objects, but resembles those of large (greater than 100-km), C-class, mainbelt asteroids.

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