Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback

    • MMS 1 Hot Plasma Composition Analyzer (HPCA) Moments, Level 2 (L2), Survey Mode, 10 s Data

    Metadata Updated: September 19, 2025

    Hot Plasma Composition Analyzer (HPCA) Moments, Level 2, Survey, 10 s Data. The MMS HPCA instruments measure the energy and composition of magnetospheric plasmas in the energy range from 1 eV to 40 keV. An electrostatic energy analyzer (ESA) that is optically coupled to a carbon-foil based Time-of-Flight (TOF) section comprises each HPCA. The basic HPCA data product is an array of counts for 5 ion species, at 63 energies, for each of 16 elevation anodes. Sixteen basic products, also called azimuths, are acquired every 10 s; half a spacecraft spin period nominally has 16 azimuths. The five ion species are protons (H+), alpha particles (He++), helium ions (He+), singly charged Oxygen (O+), and background counts.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date August 21, 2025
    Metadata Updated Date September 19, 2025

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date August 21, 2025
    Metadata Updated Date September 19, 2025
    Publisher MMS Science Data Center;NASA Space Physics Data Facility (SPDF) Coordinated Data Analysis Web (CDAWeb) Data Services
    Maintainer
    Identifier https://doi.org/10.48322/xh05-q537
    Data Last Modified 2025-09-10
    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 d896208b-8e76-4d44-b00c-e6521421db86
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.48322/xh05-q537
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash 22c206726f5c830384708aca1ff6137b5cc07521cb614e2e8b8935d6cf6e3d95
    Source Schema Version 1.1
    Temporal 2015-06-22/2015-06-22

    Didn't find what you're looking for? Suggest a dataset here.