NSSDCA ID: SPHE-00368
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
Time span: 1972-04-18 to 1986-12-15
These experimenter-supplied data are written as file 1 on a binary magnetic tape created on an IBM 3081 computer. They consist of the following time-ordered solar wind parameters for protons: the number density (#/cc), temperature (deg K), bulk speed (km/s), flow azimuth, and flow elevation (deg). The parameters were derived by least-square fitting a convected isotropic Maxwellian distribution function to the raw data; the bulk velocity was transformed to inertial coordinates centered on the spacecraft, with the Z axis toward the north ecliptic pole and the X axis in the Z sun plane. Estimated errors are 12% for density, 20% for temperature, 20 km/s for speed, and 1 deg for angles. All analyzed fits are included in this data set, with bad and questionable fits flagged. (During the period April 1972 to December 1977, only one sample per hour was fitted, except during the Jupiter encounter of December 1973. There were up to 5 samples taken per hour.) In addition to the five parameters, each data record contains the uncertainties of each parameter, the chi-square of the fit, and trajectory parameters (heliocentric ecliptic). Microfiche plots of the parameters and related functions are available at NSSDC as 72-012A-13F and G.
Questions and comments about this data collection can be directed to: Dr. H. Kent Hills
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Susan E. Kayser | Data Provider | NASA Goddard Space Flight Center | skayser@nsf.gov |