PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2002-08-20 NOTE = "This file describes the Magnetometer data available on this DVD-R volume." END_OBJECT = TEXT END This directory contains 7 types of the magnetic field data recorded from the Magnetometer on Voyager 2 from the Jupiter encounter. All data are provided as ASCII tables (.TAB), each accompanied by a PDS label (.LBL) which describes properties of the ASCII table. (1) 1.92 second averaged magnetic field data in Heliographic (RTN) coordinates. The data were averaged from the 60 ms instrument samples and are provided as: HG_1_92S_I.TAB 1979-06-20 - 1979-07-04; HG_1_92S_II.TAB 1979-07-05 - 1979-07-19; HG_1_92S_III.TAB 1979-07-20 - 1979-08-03; HG_1_92S_IV.TAB 1979-08-04 - 1979-08-19. (2) 9.6 second averaged magnetic field data in Heliographic (RTN) coordinates. The data were averaged from the 1.92 second data and are provided as: HG_9_6S.TAB 1979-06-20 - 1979-08-19. (3) 48 second averaged magnetic field data in Heliographic (RTN) coordinates. The data were averaged from the 9.6 second data and are provided as: HG_48S.TAB 1979-06-20 - 1979-08-18. (4) 1.92 second averaged data in System III (1965) right handed coordinates. The data were collected from the Low Field Magnetometer (LFM) and resampled at a 1.92 second sample rate and are provided as: S3_1_92S_I.TAB 1979-07-05 - 1979-07-17; S3_1_92S_II.TAB 1979-07-18 - 1979-07-30; S3_1_92S_III.TAB 1979-07-31 - 1979-08-12. (5) 9.6 second averaged magnetic field data in System III (1965) right handed coordinates. The data were averaged from the 1.92 second data and are provided as: S3_9_6S.TAB 1979-07-05 - 1979-08-12. (6) 48 second averaged magnetic field data in System III (1965) right handed coordinates. The data were averaged from the 9.6 second data and are provided as: S3_48S.TAB 1979-07-05 - 1979-08-12. (7) 48 second magnetometer offset data in spacecraft coordinates. The data are provided as: SC_FIELD.TAB 1979-06-20 - 1979-08-18. Additional information associated with this data set is available in the following files: file contents /CATALOG/MAGINST.CAT MAG instrument description /CATALOG/MHG192DS.CAT data set description for 1.92 sec data in RTN /CATALOG/MHG96DS.CAT data set description for 9.6 sec data in RTN /CATALOG/MHG48DS.CAT data set description for 48 sec data in RTN /CATALOG/MS3192DS.CAT data set description for 1.92 sec data in System III (1965) /CATALOG/MS396DS.CAT data set description for 9.6 sec data in System III (1965) /CATALOG/MS348DS.CAT data set description for 48 sec data in System III (1965) /CATALOG/PERSON.CAT personnel information /CATALOG/REF.CAT key reference description /DOCUMENT/MAG/MAGINST.ASC ASCII and HTML versions of the MAG investigation and MAGINST.HTM description paper [BEHANNONETAL1977] /-------------------------\ | 1.92 SECOND DATA in HG | \-------------------------/ Columns ====================================================================== name type description ---------------------------------------------------------------------- time char_24 time in the format yyyy-mm-ddThh:mm:ss.sssZ s/c clock chat_12 mod 65536:mod_60:fds_line mag_id integer_4 magnetometer ID Br float_4 radial (Sun to spacecraft) B-field component Bt float_4 azimuthal B-field component (positive in the direction of planetary orbital motion) Bn float_4 North/South B-field component (positive northward) Bmag float_4 magnitude of the averaged magnetic field components avg_Bmag float_4 average of the magnetic field magnitudes delta float_4 delta = arcsin(Bn/Bmag) lambda float_4 lambda = 180. - atan(Bt/-Br) rms_Br float_4 rms 1 rms_Bt float_4 rms 2 rms_Bn float_4 rms 3 npts integer_4 number of data points in average /-------------------------\ | 1.92 SECOND DATA in S3 | \-------------------------/ Columns ======================================================================= name type description ----------------------------------------------------------------------- time char_24 time in the format yyyy-mm-ddThh:mm:ss.sssZ s/c clock chat_12 mod 65536:mod_60:fds_line mag_id integer_4 magnetometer ID Br float_4 radial (Jupiter to spacecraft) B-field component Btheta float_4 North/South (system III) B-field component, positive southward Bphi float_4 azimuthal (system III) B-field component, positive eastward Bmag float_4 magnitude of the averaged magnetic field components avg_Bmag float_4 average of the magnetic field magnitudes delta float_4 delta = arcsin(Btheta/Bmag) lambda float_4 lambda = 180. - atan(Bphi/-Br) rms_Br float_4 rms Br rms_Bt float_4 rms Bt rms_Bn float_4 rms Bp npts integer_4 number of data points in average /-------------------------\ | 9.6 SECOND DATA in HG | \-------------------------/ Columns ^M ====================================================================== ^M name type description ^M ---------------------------------------------------------------------- ^M time char_24 time in the format yyyy-mm-ddThh:mm:ss.sssZ ^M s/c clock chat_12 mod 65536:mod_60:fds_line mag_id integer_4 magnetometer ID ^M Br float_4 radial (Sun to spacecraft) B-field component ^M Bt float_4 azimuthal B-field component (positive in the ^M direction of planetary orbital motion) ^M Bn float_4 North/South B-field component (positive northward) ^M Bmag float_4 magnitude of the averaged magnetic field components ^M avg_Bmag float_4 average of the magnetic field magnitudes ^M delta float_4 delta = arcsin(Bn/Bmag) ^M lambda float_4 lambda = 180. - atan(Bt/-Br) ^M rms_Br float_4 rms 1 ^M rms_Bt float_4 rms 2 ^M rms_Bn float_4 rms 3 ^M npts integer_4 number of data points in average ^M /-------------------------\ | 9.6 SECOND DATA in S3 | \-------------------------/ Columns ^M ====================================================================== ^M name type description ^M ---------------------------------------------------------------------- ^M time char_24 time in the format yyyy-mm-ddThh:mm:ss.sssZ ^M s/c clock chat_12 mod 65536:mod_60:fds_line mag_id integer_4 magnetometer ID ^M Br float_4 radial (Sun to spacecraft) B-field component ^M Bt float_4 azimuthal B-field component (positive in the ^M direction of planetary orbital motion) ^M Bn float_4 North/South B-field component (positive northward) ^M Bmag float_4 magnitude of the averaged magnetic field components ^M avg_Bmag float_4 average of the magnetic field magnitudes ^M delta float_4 delta = arcsin(Bn/Bmag) ^M lambda float_4 lambda = 180. - atan(Bt/-Br) ^M rms_Br float_4 rms 1 ^M rms_Bt float_4 rms 2 ^M rms_Bn float_4 rms 3 ^M npts integer_4 number of data points in average ^M /-------------------------\ | 48 SECOND DATA in HG | \-------------------------/ Columns ========================================================================= name type description ------------------------------------------------------------------------- time a24 time in format yyyy-mm-ddThh:mm:ss.sssZ m65536 i5 s/c clock mod 65536 mod60 i2 s/c clock mod60 fds_line i1 s/c clock fds line mag_id i1 magnetometer ID Br 1pe15.8 radial (Sun to spacecraft) B-field component Bt 1pe15.8 azimuthal B-field component (positive in the direction planetary orbital motion) Bn 1pe15.8 North/South B-field component (positive northward) Bmag 1pe15.8 magnitude of the averaged magnetic field components avg_Bmag 1pe15.8 average of the magnetic field magnitudes delta 1pe15.8 delta = arcsin(Bn/Bmag) lambda 1pe15.8 lambda = 180. - atan(Bt/-Br) rms_Br 1pe15.8 rms 1 rms_Bt 1pe15.8 rms 2 rms_Bn 1pe15.8 rms 3 npts i2 number of points in average dflag a8 data flag /-------------------------\ | 48 SECOND DATA in S3 | \-------------------------/ Columns ======================================================================== name type description ------------------------------------------------------------------------ time a24 time in the format yyyy-mm-ddThh:mm:ss.sssZ m65536 i6 s/c clock mod 65536 mod60 i3 s/c clock mod 60 fds_line i2 s/c clock fds line mag_id i2 magnetometer ID Br 1pe15.8 radial (Jupiter to spacecraft) B-field component Btheta 1pe15.8 North/South (system III) B-field component, positive southward Bphi 1pe15.8 azimuthal (system III) B-field component, positive eastward Bmag 1pe15.8 magnitude of the averaged magnetic field components avg_Bmag 1pe15.8 average of the magnetic field magnitudes delta 1pe15.8 delta = arcsin(Btheta/Bmag) lambda 1pe15.8 lambda = 180. - atan(Bphi/-Br) rms_Br 1pe15.8 rms Br rms_Bt 1pe15.8 rms Bt rms_Bp 1pe15.8 rms Bp sc_r 1pe15.8 Jupiter to spacecraft range (jovian radii Rj=71492km) sc_lat 1pe15.8 spacecraft jovian (jovicentric) latitude (degree) sc_lon 1pe15.8 spacecraft jovian east longitude (degrees) npts i2 number of data points in average dflag a8 data flag /-------------------------\ | SC FIELD DATA | \-------------------------/ Columns =========================================================================== name type description --------------------------------------------------------------------------- time a24 time in format yyyy-mm-ddThh:mm:ss.sssZ m65536 i5 s/c clock mod 65536 mod60 i2 s/c clock mod60 mag_id i1 magnetometer ID Bx f11.8 spacecraft magnetic field component By f11.8 spacecraft magnetic field component Bz f11.8 spacecraft magnetic field component Bmag f11.8 total magnetic field strength rms_Bx f11.8 rms mag component rms_By f11.8 rms mag component rms_Bz f11.8 rms mag component npts i4 number of points in average