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Voyager 2 Heliosphere Plasma Science (PLS) Solar Wind Plasma, Hourly Data

Published by PPI | National Aeronautics and Space Administration | Catalog Last Checked: August 12, 2026 at 12:02 AM | Dataset Last Updated: August 10, 2026
* Data Set Overview * ================= Voyager 2 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: * 1) Year * 2) Day of Year, Day 1 is January 1 * 3) Hour * 4) Proton Speed in km/s, the Magnitude of Velocity Vector * 5) Proton Number Density in cm^-3 * 6) Proton Thermal Speed in km/s, the Proton Temperature in eV is equal to 0.0052 times the Square of the Thermal Speed * 7) Velocity Vector R Component, VR, in km/s * 8) Velocity Vector T Component, VT, in km/s, Warning: This Parameter is often not reliable after 1989 * 9) Velocity Vector N Component, VN, in km/s, Warning: This Parameter is often not reliable after 1989 The 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. Please 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.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "026:00"
]
contactPoint 
{
  "fn": "NASA Space Physics Data Facility",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:NASA-SPDF-Support@nasa.onmicrosoft.com"
}
description * Data Set Overview * ================= Voyager 2 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: * 1) Year * 2) Day of Year, Day 1 is January 1 * 3) Hour * 4) Proton Speed in km/s, the Magnitude of Velocity Vector * 5) Proton Number Density in cm^-3 * 6) Proton Thermal Speed in km/s, the Proton Temperature in eV is equal to 0.0052 times the Square of the Thermal Speed * 7) Velocity Vector R Component, VR, in km/s * 8) Velocity Vector T Component, VT, in km/s, Warning: This Parameter is often not reliable after 1989 * 9) Velocity Vector N Component, VN, in km/s, Warning: This Parameter is often not reliable after 1989 The 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. Please 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.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "https://helio.data.nasa.gov/dataset/Voyager2_PLS_Heliosphere_PT1H"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "https://hpde.io/NASA/NumericalData/Voyager2/PLS/Heliosphere/PT1H"
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  {
    "@type": "dcat:Distribution",
    "format": "TXT",
    "mediaType": "text/plain",
    "downloadURL": "https://pds-ppi.igpp.ucla.edu/data/VG2-SS-PLS-4-SUMM-1HR-AVG-V1.0/AAREADME.TXT"
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  }
]
identifier https://doi.org/10.48322/t0nm-xg69
keyword 
[
  "thermalplasma"
]
landingPage https://doi.org/10.48322/t0nm-xg69
license https://www.usa.gov/government-works
modified 2026-08-10
programCode 
[
  "026:000"
]
publisher 
{
  "name": "PPI",
  "@type": "org:Organization"
}
theme 
[
  "Heliophysics"
]
title Voyager 2 Heliosphere Plasma Science (PLS) Solar Wind Plasma, Hourly Data

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