2.3.1 spase://CNES/NumericalData/CDPP-AMDA/PioneerVenusOrbiter/Ephemeris/pvo-orb-pos orbit venus 2015-10-14T16:46:29Z This dataset 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. Due to the way the source trajectory files were generated and the lack of good quality tracking data for some periods during the mission the trajectory coverage during the interval above is NOT continuous and has almost 100 gaps ranging in size from minutes to hours to days to many months spase://SMWG/Person/Raymond.J.Walker GeneralContact spase://SMWG/Repository/CDPP/AMDA Online Open http://amda.cdpp.eu Text PDS PVO-V-POS-5--VSOCOORDS-12SEC-V1.0 spase://CNES/Instrument/CDPP-AMDA/PioneerVenusOrbiter/Ephemeris Ephemeris 1978-12-05T06:55:10Z 1992-10-07T18:14:07Z PT12S PT600S Venus xyz_vso pvo_orb_xyzvso Pioneer Venus Orbiter trajectory in VSO coordinates pos.bodyrc;instr.obsty Rv Cartesian VSO TimeSeries 3 x 1 pvo_orb_xyzvso(0) y 2 pvo_orb_xyzvso(1) z 3 pvo_orb_xyzvso(2) Positional distance pvo-venus pvo_orb_r Range of the spacecraft from the Jupiter center of mass pos.distance;instr.obsty Rv TimeSeries Positional altitude pvo_orb_alt km TimeSeries Positional solar_zenith_angle pvo_orb_sza degrees TimeSeries Positional lon planetographic (east) pvo_orb_lon Planetographic longitude of the spacecraft pos.bodyrc.long;instr.obsty deg TimeSeries Positional lat planetographic pvo_orb_lat Planetographic latitude of the spacecraft pos.bodyrc.lat deg TimeSeries Positional xyz_spin_axis_vso pvo_orb_spvso Cartesian VSO TimeSeries 3 x 1 pvo_orb_spvso(0) y 2 pvo_orb_spvso(1) z 3 pvo_orb_spvso(2) Positional lon_iau_sun pvo_orb_clon pos.bodyrc.long;instr.obsty deg TimeSeries Positional lat_iau_sun pvo_orb_clat pos.bodyrc.lat deg TimeSeries Positional earth lon_iau_sun pvo_orb_elon pos.bodyrc.long;instr.obsty degrees TimeSeries Positional distance pvo-sun pvo_orb_rsun pos.distance;instr.obsty AU TimeSeries Positional