Global map of the abundance of hydrogen within the regolith of 1 Ceres determined from neutron counting data acquired by the NASA Dawn mission's Gamma Ray and Neutron Detector from low altitude [PRETTYMANETAL2017].

 
Citation Prettyman, T.H., Dawn GRaND hydrogen map, DAWN-A-GRAND-5-CERES-HYDROGEN-MAP_V1.0, NASA Planetary Data System, 2017.
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Data Set Abstract A global map of the concentration of hydrogen within the regolith of asteroid 1 Ceres on twenty-degree quasi-equal-area pixels is provided. Hydrogen concentrations were determined from thermal+epithermal neutron counting data acquired by the NASA Dawn mission's Gamma Ray and Neutron Detector (GRaND) while in low altitude mapping orbit, about 385 km from Ceres' surface (about 0.8 body radii altitude). The concentrations are representative of Ceres's bulk regolith to depths up to a few decimeters with a spatial resolution of about 600-km full-width-at-half-maximum of arc length on the surface. The methods used to determine hydrogen concentration are described by PRETTYMANETAL2017.
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    Additional Information
    Mission Information DAWN MISSION TO VESTA AND CERES
    Data Set Information DAWN-A-GRAND-5-CERES-HYDROGEN-MAP_V1.0
    Instrument Host Information DAWN
    Instrument Information GRAND
    Target Information 1 CERES