PVO Spacecraft VSO Ephemeris and Spacecraft Orientation ASCII Data Collection

This collection is sampled every 12 seconds near periapsis, and at 1 minute or 10 minute rates in the solar wind, the lowest rates near apoapsis. Planetocentric and heliocentric position vectors and solar zenith angle (Sun-Venus-PVO) are also provided.

The VSO parameters are derived from the PVO Supplemental Experimenter Data Records (SEDR), other parameters are taken directly from the SEDR dataset. The original data were all binary and contained a non-standard time representation. No software was provided to convert these data to ASCII.