{
  "Spase": {
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xmlns": "http://www.spase-group.org/data/schema",
    "xsi:schemaLocation": "http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_2_9.xsd",
    "Version": "2.2.9",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/Vega2/MISCHA/FLYBY/PT0.1S",
      "ResourceHeader": {
        "ResourceName": "Vega 2 Magnetic Field Data (0.1 s), Halley Comet",
        "ReleaseDate": "2020-07-07T21:15:50Z",
        "Description": "This product contains high-resolution (0.1 s) magnetic field data for intervals of the closest approach of the Vega 2 spacecraft to Halley comet. Magnetic field and position data are in the cometocentric solar ecliptic (CSE) coordinate system. CSE 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. CSE coordinate system for the magnetic field data: * Axes are parallel to the CSE system for the position. * This coordinate system is valid only for very short time, about 4 hours around the closest approach of the spacecraft to the comet, since for a larger angular distance of the spacecraft from the comet, the direction to the Sun from both objects will be different.",
        "Acknowledgement": "Use of these data in publications should be accompanied by acknowledgements of the National Space Science Data Center(NSSDC), Space Physics Data Facility(SPDF) and IZMIRAN at Moscow.",
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Valery.G.Petrov",
            "Role": "GeneralContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Valery.A.Styazhkin",
            "Role": "DataProducer"
          },
          {
            "PersonID": "spase://SMWG/Person/Natalia.E.Papitashvili",
            "Role": "TechnicalContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Jan.Merka",
            "Role": "MetadataContact"
          }
        ],
        "PriorID": [
          "spase://VHO/NumericalData/Vega2/MISCHA/FLYBY.PT0.1S",
          "spase://VSPO/NumericalData/Vega2/MISCHA/FLYBY/PT0.1S"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": [
          {
            "Name": "FTPS from SPDF (not with most browsers)",
            "URL": "ftps://spdf.gsfc.nasa.gov/pub/data/zzz_old/vega_data_from_nssdc/mag/",
            "Description": "FTP access to Vega mission data at NSSDC."
          },
          {
            "Name": "HTTPS from SPDF",
            "URL": "https://spdf.gsfc.nasa.gov/pub/data/zzz_old/vega_data_from_nssdc/mag/",
            "Description": "In CDF via HTTP from SPDF"
          }
        ],
        "Format": "Text.ASCII",
        "Encoding": "ASCII"
      },
      "InstrumentID": "spase://SMWG/Instrument/Vega2/MISCHA",
      "MeasurementType": [
        "MagneticField",
        "Ephemeris"
      ],
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1986-03-09T04:12:37.1Z",
          "StopDate": "1986-03-09T08:40:07Z"
        },
        "Cadence": "PT0.1S"
      },
      "ObservedRegion": [
        "Heliosphere.Inner",
        "Comet"
      ],
      "Caveats": "The CSE coordinate system for magnetic field data is valid only for very short time, about 4 hours around the closest approach of the spacecraft to the comet, since for a larger angular distance of the spacecraft from the comet, the direction to the Sun from both objects will be different.",
      "Parameter": [
        {
          "Name": "Year",
          "ParameterKey": "Column 1",
          "Description": "Time of observation (year)",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Month",
          "ParameterKey": "Column 2",
          "Description": "Time of observation (month of year)",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Day",
          "ParameterKey": "Column 3",
          "Description": "Time of observation (day of month)",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Hour",
          "ParameterKey": "Column 4",
          "Description": "Time of observation (hour of day)",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Minute",
          "ParameterKey": "Column 5",
          "Description": "Time of observation (minute)",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Second",
          "ParameterKey": "Column 6",
          "Description": "Time of observation (second)",
          "Units": "s",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Bx",
          "ParameterKey": "Column 7",
          "Description": "Magnetic field X in CSE coordinate system",
          "Units": "nT",
          "UnitsConversion": "1e-9>T",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "SSE"
          },
          "Field": {
            "Qualifier": [
              "Component.I",
              "Average"
            ],
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "By",
          "ParameterKey": "Column 8",
          "Description": "Magnetic field By component in CSE coordinate system",
          "Units": "nT",
          "UnitsConversion": "1e-9>T",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "SSE"
          },
          "Field": {
            "Qualifier": [
              "Component.J",
              "Average"
            ],
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Bz",
          "ParameterKey": "Column 9",
          "Description": "Magnetic field Bz component in CSE coordinate system",
          "Units": "nT",
          "UnitsConversion": "1e-9>T",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "SSE"
          },
          "Field": {
            "Qualifier": [
              "Component.K",
              "Average"
            ],
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "B",
          "ParameterKey": "Column 10",
          "Description": "Magnetic field magnitude, nT",
          "Units": "nT",
          "UnitsConversion": "1e-9>T",
          "FillValue": "9999.9",
          "Field": {
            "Qualifier": [
              "Magnitude",
              "Average"
            ],
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "X",
          "ParameterKey": "Column 11",
          "Description": "X component of spacecraft position in CSE coordinates (Cometocentric ecliptic coordinate system)",
          "Units": "km",
          "UnitsConversion": "1e3>m",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "SSE"
          },
          "Support": {
            "Qualifier": "Component.I",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Yse",
          "ParameterKey": "Column 12",
          "Description": "Y component of spacecraft position in CSE coordinates (Cometocentric ecliptic coordinate system)",
          "Units": "km",
          "UnitsConversion": "1e3>m",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "SSE"
          },
          "Support": {
            "Qualifier": "Component.J",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Zse",
          "ParameterKey": "Column 13",
          "Description": "Z component of spacecraft position in CSE coordinates (Cometocentric ecliptic coordinate system)",
          "Units": "km",
          "UnitsConversion": "1e3>m",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "SSE"
          },
          "Support": {
            "Qualifier": "Component.K",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Dist",
          "ParameterKey": "Column 14",
          "Description": "Distance between spacecraft and Halley comet, km",
          "Units": "km",
          "UnitsConversion": "1e3>m",
          "Support": {
            "SupportQuantity": "Positional"
          }
        }
      ]
    }
  }
}