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Helios 1 E1 (Rosenbauer) Hourly Plasma Data

Published by NASA Space Physics Data Facility (SPDF) Data Services | National Aeronautics and Space Administration | Catalog Last Checked: May 18, 2026 at 03:56 PM | Dataset Last Updated: May 11, 2026
These hourly averaged solar wind plasma data from the E1 Plasma Detectors (Rosenbauer) onboard the Helios 1 spacecraft include time, earth-sun-Helios angle, sun-Helios distance (AU), Carrington longitude of Helios, solar-ecliptic latitude, Carrington rotation number, proton bulk speed, temperature, number density, flow angles of ecliptic elevation and azimuth, standard deviations of the plasma parameters, and the number of data points in the hourly averages.

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