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    • Voyager 1 Heliosphere Plasma Science (PLS) Solar Wind Plasma, Hourly Data

    Metadata Updated: April 10, 2026

    • Data Set Overview\n =================\n\nVoyager 1 Plasma Data of the Solar Wind, 1 h Averages. The Files in this Directory contain the Voyager hourly average Plasma Data. The Plasma Parameters are obtained by finding the best Fit of a Convected Isotropic Maxwellian Distribution to the Data. One Sigma Errors are typically less than 0.5% in the Speed and the Radial Velocity, VR, less than 5% for the Density and Thermal Speed, and vary greatly for the other two Velocity Components, VT and VN. Sampling Times range from 12 s to 192 s, with sampling generally more frequent early in the Mission. The Columns are:\n\n 1) Year\n 2) Day of Year, Day 1 is January 1\n 3) Hour\n 4) Proton Speed in km/s, the Magnitude of Velocity Vector\n 5) Proton Number Density in cm^-3\n 6) Proton Thermal Speed in km/s, the Proton Temperature in eV is equal to 0.0052 times the Square of the Thermal Speed\n 7) Velocity Vector R Component, VR, in km/s\n 8) Velocity Vector T Component, VT, in km/s, Warning: This Parameter is often not reliable after 1989\n 9) Velocity Vector N Component, VN, in km/s, Warning: This Parameter is often not reliable after 1989\n\nThe Velocity Components are given in the RTN Coordinate System, where R is radially outward, T is in a Plane parallel to the Solar Equatorial Plane and positive in the Direction of Solar Rotation, and N completes the Right-handed System.\n\nPlease consult with us, or at least send Preprints, when you use these Data to prevent grievous Errors or Misconceptions, John Richardson, jdr@space.mit.edu.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    No file downloads have been provided. The publisher may provide downloads in the future or they may be available from their other links.

    Dates

    Metadata Created Date March 13, 2026
    Metadata Updated Date April 10, 2026

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 13, 2026
    Metadata Updated Date April 10, 2026
    Publisher PDS PPI
    Maintainer
    Identifier /SDE/SPASE_JSON/|72372928e625f6359a3dda06ab7609e6
    Data Last Modified 2026-04-06
    Category Heliophysics
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 50cdacc4-1d94-481d-8841-dc1fbdccf0a4
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    License https://www.usa.gov/government-works
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash 64e06de2fe8ef5f852c743244fd70072deedc294491b42324b1a8eb949b7dd20
    Source Schema Version 1.1

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