{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "NASA Space Physics Data Facility", "hasEmail": "mailto:NASA-SPDF-Support@nasa.onmicrosoft.com"}, "description": "This product contains 1-minute magnetic field data for intervals of the closest approach of the Vega 1 spacecraft to Halley comet. Magnetic field data are in SE coordinate system, while spacecraft positions are in cometocentric (solar) ecliptic coordinates, CSE. Magnetic field data are presented in spacecraft-centered solar ecliptic (SE) coordinate system as Bxse, Bzse, Byse: * Bxse is directed from the spacecraft to the Sun. * Bzse is directed along the Z axis of the Solar Ecliptic system (to ecliptic pole). * Byse completes the right handed set and B=sqrt(Br^2+By^2+Bz^2). CSE (CometoCentric ecliptic coordinate system) for the spacecraft position: * Origin is at comet position, x-axis from comet to the Sun, z-axis to ecliptic northpole. * The (x,y)-plane is parallel to the ecliptic plane.", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "ftps://spdf.gsfc.nasa.gov/pub/data/zzz_old/vega_data_from_nssdc/mag/", "format": "BIN", "mediaType": "application/octet-stream"}, {"@type": "dcat:Distribution", "downloadURL": "https://spdf.gsfc.nasa.gov/pub/data/zzz_old/vega_data_from_nssdc/mag/", "format": "BIN", "mediaType": "application/octet-stream"}], "identifier": "/SDE/SPASE_JSON/|cf4c15f9d522ecd8852fc15506862a76", "keyword": ["ephemeris", "magneticfield"], "license": "https://www.usa.gov/government-works", "modified": "2026-04-06", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "NASA Space Physics Data Facility (SPDF) Data Services"}, "theme": ["Heliophysics"], "title": "Vega 1 Magnetic Field Data (1 min), Halley Comet"}