urn:nasa:pds:pvo-omag-cal:data-sc-24s-asc:0052 1.0 1.22.0.0 Product_Observational 2024 This file contains Pioneer Venus Orbiter 24 second averaged magnetic-field data in Venus Solar Orbital (VSO) and PVO inertial spacecraft (PVO_ISC) coordinates, from PVO Venus orbit OMAG. Christopher Russell 0000-0003-1639-8298 1 University of California, Los Angeles https://ror.org/046rm7j60 Muriel Kniffin 2 University of California, Los Angeles https://ror.org/046rm7j60 2024-09-12 1.0 This product, PVO_OMAG_SC_24S_0052.TAB, was originally released in 1997 as part of the PDS3 PVO-V-OMAG-4--SCCOORDS-24SEC-V1.0 data set. A revised version of this data set (PVO-V-OMAG-4--SCCOORDS-24SEC-V2.0) was released in 2023. This is the first version of these data in PDS4. The metadata have been migrated to PDS4. The data are the same as those in the 2023 release. This data file was regenerated to correct errors in the BZ_VSO values and to flag bad data values that were present in some data files. 1979-01-25T05:20:26.257Z 1979-01-26T05:30:00.182Z Science Calibrated Heliosphere Magnetosphere Fields Magnetic Background Pioneer Venus (PV) Mission urn:nasa:pds:context:investigation:mission.pioneer_venus data_to_investigation Pioneer Venus Orbiter (PVO) Host urn:nasa:pds:context:instrument_host:spacecraft.pvo is_instrument_host Orbiter Fluxgate Magnetometer (OMAG) Instrument urn:nasa:pds:context:instrument:pvo.omag 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 52 52 urn:nasa:pds:pvo-omag-cal:data-sc-24s-bin:0052::1.0 data_to_calibrated_product This file was created from the flatfile PVO_OMAG_SC_24S_0052. The variance and covariance data were taken from the original binary version of these data. urn:nasa:pds:pvo-ephem:data-vso-bin:0052::1.0 data_to_geometry The VSO data were generated using the PVO VSO spin axis information contained in the PVO VSO Ephemeris data set (PVO-V-POS-5--VSOCOORDS-12SEC-V2.0) in the file PVO_EPHEM_VSO_0052. The ALT, SZA, LON, and LAT data were taken from the Ephemeris data set as well, and interpolated 24 seconds. PVO-V-OMAG-4--SCCOORDS-24SEC-V2.0:PVO_OMAG_SC_24S_0052.TAB:PVO_OMAG_SC_24S_0052.TAB data_to_calibrated_source_product 10.17189/6skx-3c53 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_OMAG_SC_24S_0052.TAB 2024-09-11T16:41:46 1779898 e36b00896ef49c95654b75bec7dda104 This data file is unmodified from the PDS3 version. 0 6979 Carriage-Return Line-Feed 23 0 255 UT 1 1 ASCII_Date_Time_YMD 23 s Universal Time in the ISO month/day format YYYY-MM-DDThh:mm:ss.sss where YYYY is the year, MM is the month, DD is the day of month, T is literal, hh is the hour, mm in the minute, and ss.sss is the second to millisecond resolution. The time stamp is placed at the center of a 24 second moving average window that is advanced by 12 seconds each sample. Bx_VSO 2 25 ASCII_Real 10 nT Bx VSO: The X-component of the magnetic field in the Venus Solar Orbital System (VSO - GSE at Venus). The system is Venus centered, with the X axis pointing instantaneously from Venus to the Sun, the Z axis is perpendicular to the orbital (ecliptic) plane of Venus positive 'up', and the Y axis completing the right-handed set. 99999.999 By_VSO 3 36 ASCII_Real 10 nT By VSO: The Y-component of the magnetic field in the Venus Solar Orbital System (VSO). 99999.999 Bz_VSO 4 47 ASCII_Real 10 nT BZ VSO: The Z-component of the magnetic field in the Venus Solar Orbital System (VSO). 99999.999 Bx_SC 5 58 ASCII_Real 10 nT Bx SC: The X-component of the magnetic field in the PVO Inertial Spacecraft Coordinate System (PVO_ISCC). This is the component that lies in the sunward direction in the plane that contains the Sun-spacecraft vector and the spacecraft spin axis. This vector has been averaged over two spin periods from the high resolution data. 99999.999 By_SC 6 69 ASCII_Real 10 nT By SC: The Y-component of the magnetic field in the PVO Inertial Spacecraft Coordinate System (PVO_ISCC). The Y axis is formed by the right-handed vector cross product of the X and Z unit vectors where the Z axis is anti-parallel to the spacecraft spin axis and the X-Z plane contains the Sun. This vector has been averaged over two spin periods from the high resolution data. 99999.999 Bz_SC 7 80 ASCII_Real 10 nT Bz SC: The Z-component of the magnetic field in the PVO Inertial Spacecraft Coordinate System (PVO_ISCC). The Z axis is defined to be anti-parallel to the spacecraft spin axis during orbital operations. This vector has been averaged over two spin periods from the high resolution data. 99999.999 Bt 8 91 ASCII_Real 10 nT Bt: The vector magnitude of the averaged field components. 99999.999 VAR_Bx 9 102 ASCII_Real 10 nT**2 VAR Bx: Variance of the Bx SC over the averaging window. 99999.999 CVAR_Bxy 10 113 ASCII_Real 10 nT**2 CVAR Bxy: The covariance of Bx SC wrt By SC over the averaging window. 99999.999 CVAR_BZ 11 124 ASCII_Real 10 nT**2 CVAR Bxz: The covariance of Bx SC wrt Bz SC over the averaging window. 99999.999 VAR_By 12 135 ASCII_Real 10 nT**2 VAR By: Variance of the By SC over the averaging window. 99999.999 CVAR_Byz 13 146 ASCII_Real 10 nT**2 CVAR_Byz: The covariance of By SC wrt Bz SC over the averaging window. 99999.999 VAR_Bz 14 157 ASCII_Real 10 nT**2 VAR Bz: Variance of the Bz SC over the averaging window. 99999.999 VAR_Bt 15 168 ASCII_Real 10 nT**2 VAR Bt: Variance of the Bt SC over the averaging window. 99999.999 N 16 180 ASCII_Integer 4 N: The number of data points in the magnetic field averages. -999 X_VSO 17 184 ASCII_Real 10 Venus radii X VSO: The X-component of the PVO spacecraft position in Venus Solar Orbital Coordinates (VSO). The X component of the VSO coordinate system is taken to be positive in the direction of the Sun measured along the Venus- Sun line. The units are given in Venus Radii where Rv = 6050 km. 99999.999 Y_VSO 18 195 ASCII_Real 10 Venus radii Y VSO: The Y-component of the PVO spacecraft position in Venus Solar Orbital Coordinates (VSO).The Y component of the VSO coordinate system is taken to be positive in the direction opposing orbital motion (dusk) and lying in the orbital plane of Venus. The units given in Venus Radii where Rv = 6050 km. 99999.999 Z_VSO 19 206 ASCII_Real 10 Venus radii Z VSO: The Z-component of the PVO spacecraft position in Venus Solar Orbital Coordinates (VSO). The Z component of the VSO coordinate system is taken to be parallel to the pole of the Venus orbital plane and positive in the northward direction (upward normal). The units are given in Venus Radii where Rv = 6050 km. 99999.999 ALT 20 217 ASCII_Real 10 km ALT: Spacecraft Altitude above the Venus surface. This value is computed by subtracting 6050 km from the centered Venus-to-PVO range given in the SEDR. 99999.999 SZA 21 228 ASCII_Real 8 deg SZA: Solar Zenith Angle. This is the three body angle Sun-Venus-PVO taken from the SEDR. 999.999 LON 22 237 ASCII_Real 8 deg LON: Venus centered longitude of the PVO spacecraft. 999.999 LAT 23 246 ASCII_Real 8 deg LAT: Venus centered latitude of the PVO spacecraft. 999.999