Arecibo radar observations of Phobos and Deimos

Details Arecibo radar observations of Phobos and Deimos Arecibo radar observations of Phobos and Deimos

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007icar..186..581b&link_type=abstract

Icarus, Volume 186, Issue 2, p. 581-584.

Physics

4

Scientific paper

In November 2005, we observed the moons of Mars using the Arecibo 2380-MHz (13-cm) radar, obtaining a result for the OC radar albedo of Phobos (0.056±0.014) consistent with its previously reported radar albedo and implying an upper bound on its near-surface bulk density of 1.6±0.3 gcm-3. We detected Deimos by radar for the first time, finding its OC radar albedo to be 0.021±0.006, implying an upper bound on its near-surface density of 1.1±0.3 gcm-3, consistent with a high-porosity regolith. We briefly discuss reasons for these low radar albedos, Deimos' being possibly the lowest of any Solar System body yet observed by radar.

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