urn:nasa:pds:pvo-orpa:data-photo-electron:1873 1.0 1.21.0.0 Product_Observational Knudsen, William C. 2024 This ASCII text file contains Pioneer Venus Orbiter (PVO) retarding potential analyzer (ORPA) high resolution suprathermal electrons data files for orbit 1873. 2024-04-18 1.0 This product, PVO_ORPA_PHOTO_ELECTRON_1873.TAB, was originally released in 2019 as part of the PDS3 PVO-V-ORPA-5-ELE/ION/PHOTO/UADS-V1.0 dataset. The meta- data have been migrated to PDS4. Some of the files were found to contain the word FLAG instead of a flag value. This error was corrected. Additionally, the "month/day" in the time tags were off by one day. This error was corrected as well. 1984-01-22T08:32:27.032Z 1984-01-22T01:51:12.462Z Science Derived Ionosphere Particles Electrons Pioneer Venus Mission urn:nasa:pds:context:investigation:mission.pioneer_venus data_to_investigation Pioneer Venus Orbiter Host urn:nasa:pds:context:instrument_host:spacecraft.pvo is_instrument_host Orbiter Retarding Potential Analyzer for PVO Instrument urn:nasa:pds:context:instrument:pvo.orpa is_instrument Venus Planet urn:nasa:pds:context:target:planet.venus data_to_target Solar Wind Plasma Stream urn:nasa:pds:context:target:plasma_stream.solar_wind data_to_target Venus Orbital Operations 1873 1873 Electrons Density Electrons Temperature PVO-V-ORPA-5-ELE/ION/PHOTO/UADS-V1.0:1873_OPRA_HR_PHOTO_ELE:PVO_ORPA_PHOTO_ELECTRON_1873.TAB data_to_derived_source_product 10.17189/1519828 PDS Planetary Plasma Interactions Node This is the first version of this product converted to PDS4. The DOI provided references the PDS3 source data set. PVO_ORPA_PHOTO_ELECTRON_1873.TAB 2023-02-06T09:42:48 359199 59b95a89ccb21802878f0ac27acbaf98 This data file is unmodified from the PDS3 version. 0 963 Carriage-Return Line-Feed 37 0 373 UTC 1 1 ASCII_Date_Time_YMD 24 Date/Time string of the form yyyy-mm-ddThh:mm:ss.sss such that the representation of the date and time for Jan 01, 2000 00:00:00.000 would be: 2000-01-01T00:00:00.000Z where Z indicates Universal Time. ORBIT 2 26 ASCII_Integer 4 ORBIT NUMBER PERIAPSIS TIME 3 31 ASCII_Integer 8 %8d ms PERIAPSIS TIME (UT) DAY 4 40 ASCII_Integer 3 %3d PERIAPSIS DAY OF YEAR SWEEP 5 44 ASCII_Integer 6 %6d UNIQUE SWEEP NUMBER SWEEP TIME 6 51 ASCII_String 10 %10.5f ms UNIQUE TIME OF MEASUREMENT FOR SWEEP UNCERTAINTY = +/- 100 MS This value contains the time of day effectively formatted as hhmm.ssmmm in a floating point number where hhmm is hours and minutes, and ssmmm is seconds and milliseconds. ALTITUDE 7 62 ASCII_Real 8 %8.2f km ALTITUDE OF SWEEP. SZA 8 71 ASCII_Real 7 %7.2f Degree SOLAR ZENITH ANGLE OF SWEEP VPPH 9 79 ASCII_Real 11 %11.4e V SUPRATHERMAL ELECTRON SPACECRAFT POTENTIAL RANGE = -5 - +20V UNCERTAINTY = 0.1V -1.0000e+00 DENPH1 10 91 ASCII_Real 11 %11.4e 1/cm**3 FIRST SUPRATHERMAL ELECTRON DENSITY OF SWEEP -1.0000e+00 TEMPH1 11 103 ASCII_Real 11 %11.4e eV FIRST SUPRATHERMAL ELECTRON TEMP OF SWEEP -1.0000e+00 DENPH2 12 115 ASCII_Real 11 %11.4e 1/cm**3 SECOND SUPRATHERMAL ELECTRON DENSITY OF SWEEP -1.0000e+00 TEMPH2 13 127 ASCII_Real 11 %11.4e eV SECOND SUPRATHERMAL ELECTRON TEMP OF SWEEP -1.0000e+00 SDENPH1 14 139 ASCII_Real 11 %11.4e 1/cm**3 LEAST-SQUARES-FIT STATISTICAL UNCERTAINTY OF DENPH1 -1.0000e+00 STEMPH1 15 151 ASCII_Real 11 %11.4e eV LEAST-SQUARES-FIT STATISTICAL UNCERTAINTY OF TEMPH1 -1.0000e+00 SDENPH2 16 163 ASCII_Real 11 %11.4e LEAST-SQUARES-FIT STATISTICAL UNCERTAINTY OF DENPH2 -1.0000e+00 STEMPH2 17 175 ASCII_Real 11 %11.4e LEAST-SQUARES-FIT STATISTICAL UNCERTAINTY OF TEMPH2 -1.0000e+00 CSQ 18 187 ASCII_Real 6 %6.1f CHI SQUARE, GOODNESS OF CURVE FIT 9999.9 Saturation Current 19 194 ASCII_Real 10 %10.7f A SATURATION SUPRATHERMAL ELECTRON CURRENT 9.9999999 BCKPH 20 205 ASCII_Real 10 %10.7f A BACKGROUND SUPRATHERMAL ELECTRON CURRENT 9.9999999 Roll Angle 21 216 ASCII_Real 6 %6.2f Degree ROLL ANGLE (NON ROTATING SPIN COORDINATE SYSTEM - RAMROLL) 999.99 Spin Period 22 223 ASCII_Real 8 %8.5f s SPIN PERIOD X Spin Axis 23 232 ASCII_Real 8 %8.5f Degree ATTITUDE OF SPIN AXIS X COMPONENT (NON ROTATING SPIN COORDINATE SYSTEM - ATTX) 99.99999 Y Spin Axis 24 241 ASCII_Real 8 %8.5f ATTITUDE OF SPIN AXIS Y COMPONENT (NON ROTATING SPIN COORDINATE SYSTEM - ATTY) 99.99999 Z Spin Axis 25 250 ASCII_Real 8 %8.5f ATTITUDE OF SPIN AXIS Z COMPONENT (NON ROTATING SPIN COORDINATE SYSTEM - ATTZ) X Venus to PVO 26 259 ASCII_Real 8 %8.1f km DISTANCE FROM VENUS TO CENTER OF SPACECRAFT, X COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM - ECLIPTIC - XP1SFF) Y Venus to PVO 27 268 ASCII_Real 8 %8.1f km DISTANCE FROM VENUS TO CENTER OF SPACECRAFT, Y COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM - ECLIPTIC - YP1SFF) Z Venus to PVO 28 277 ASCII_Real 8 %8.1f km DISTANCE FROM VENUS TO CENTER OF SPACECRAFT, Z COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM - ECLIPTIC - ZP1SFF) X PVO Velocity 29 286 ASCII_Real 7 %7.3f km/s SPACECRAFT VELOCITY X COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM - ECLIPTIC - DXP1SF) Y PVO Velocity 30 294 ASCII_Real 7 %7.3f km/s SPACECRAFT VELOCITY Y COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM - ECLIPTIC - DYP1SF) Z PVO Velocity 31 302 ASCII_Real 7 %7.3f km/s SPACECRAFT VELOCITY Z COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM - ECLIPTIC - DZP1SF) X Sun to PVO 32 310 ASCII_Real 12 %12.1f km DISTANCE FROM SUN TO CENTER OF SPACECRAFT, X COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM - ECLIPTIC - XPHSFF) Y Sun to PVO 33 323 ASCII_Real 12 %12.1f km DISTANCE FROM SUN TO CENTER OF SPACECRAFT, Y COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM - ECLIPTIC - YPHSFF) Z Sun to PVO 34 336 ASCII_Real 12 %12.1f km DISTANCE FROM SUN TO CENTER OF SPACECRAFT, Z COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM - ECLIPTIC - ZPHSFF) X Venus Velocity 35 349 ASCII_Real 7 %7.3f km/s VENUS CENTER VELOCITY, X COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM) Y Venus Velocity 36 357 ASCII_Real 7 %7.3f km/s VENUS CENTER VELOCITY, Y COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM) 999.999 Z Venus Velocity 37 365 ASCII_Real 7 %7.3f km/s VENUS CENTER VELOCITY, Z COMPONENT (INERTIAL CARTESIAN COORDINATE SYSTEM) 999.999