{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Thomas Morgan", "hasEmail": "mailto:thomas.h.morgan@nasa.gov"}, "description": "A smoothed, global map of the            concentration  of hydrogen within the regolith of asteroid 1 Ceres      on two-degree equal-angle 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.", "identifier": "urn:nasa:pds:context_pds3:data_set:data_set.dawn-a-grand-5-ceres-smooth_h-map_v1.0_gben-spvp", "issued": "2018-06-26", "keyword": ["1-ceres", "dawn-mission-to-vesta-and-ceres"], "landingPage": "https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=DAWN-A-GRAND-5-CERES-SMOOTH_H-MAP_V1.0", "modified": "2025-07-17", "programCode": ["026:005"], "publisher": {"@type": "org:Organization", "name": "National Aeronautics and Space Administration"}, "references": ["https://pds.nasa.gov"], "theme": ["Earth Science"], "title": "DAWN GRAND MAP CERES SMOOTHED           \n                                      HYDROGEN MAP V1.0"}