|
Description
This collection includes Pioneer Venus Orbiter (PVO) ephemeris,
spacecraft position and orientation data in Venus Solar Orbital (VSO)
coordinates. 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 files submitted to the PDS are IGPP
flatfiles. An IGPP flatfile is a collection of 2 files, each of which
could be considered a table. The data file (.FFD) is a binary table of
data values. The header file (.FFH) is an ASCII table which describes
the data file (.FFD) and is used by the UCLA/IGPP Data Flow System (a
software package).
|
