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Radar detection of Phobos (1989)

Ostro, S. J. ; Yeomans, D. K. ; Greiner, W. ; [et al.]

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Publication Date: 2011-08-19

Description: 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.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Science (ISSN 0036-8075); 243; 1584-158

Format: text

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