{"@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": "The bundle contains derived models of Mercury gravity and topography from radio science  tracking and from the MLA instrument on MESSENGER. There are three product types: the Occultation Summary (OCC), the Spherical Harmonics ASCII Data Records (SHADR), and the Spherical Harmonics Binary Data Records (SHBDR).", "identifier": "urn:nasa:pds:mess_rs_derived", "issued": "2021-05-21", "keyword": ["mercury", "messenger"], "landingPage": "https://pds.nasa.gov/ds-view/pds/viewBundle.jsp?identifier=urn%3Anasa%3Apds%3Amess_rs_derived&version=3.0", "license": "http://www.usa.gov/publicdomain/label/1.0/", "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": "MESSENGER gravity and topography spherical harmonics model bundle"}