{"@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": "This data set gives the best available values for ion densities, temperatures, and velocities near Neptune derived from data obtained by the Voyager 2 plasma experiment.  All parameters are obtained by fitting the observed spectra (current as a function of energy) with Maxwellian plasma distributions, using a non-linear least squares fitting routine to find the plasma parameters which, when coupled with the full instrument response, best simulate the data.  The PLS instrument measures energy/charge, so composition is not uniquely determined but can be deduced in some cases by the separation of the observed current peaks in energy (assuming the plasma is co-moving).", "identifier": "urn:nasa:pds:context_pds3:data_set:data_set.vg2-n-pls-5-rdr-2promagsph-48sec-v1.0_gget-d7ha", "issued": "2021-05-21", "keyword": ["neptune", "voyager"], "landingPage": "https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=VG2-N-PLS-5-RDR-2PROMAGSPH-48SEC-V1.0", "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": "VG2 NEP PLS DERIVED RDR 2 PROTON MAGSPHERE 48SEC V1.0"}