2.2.9 spase://NASA/NumericalData/Explorer35/GSFC_Magnetometer/PT82S Explorer 35 Goddard Space Flight Center Magnetometer data IMP 2 Goddard Space Flight Center Magnetometer data IMP-E Goddard Space Flight Center Magnetometer data AIMP 2 Goddard Space Flight Center Magnetometer data 2021-03-11T18:39:11Z This data set, from the GSFC magnetometer on the lunar- orbiting Explorer 35 spacecraft, contains 81.92s averages, taken over 5.12s values, of the magnetic field magnitude and Cartesian components in GSE and GSM coordinates, plus the standard deviations for field magnitude and GSE component averages. The spacecraft position vector is given in GSE, GSM and SSE (Selenocentric Solar Ecliptic) coordinates. Additional parameters in the data records relate to field data in payload coordinates, spacecraft spin rate and spin axis direction, relative variability of the field vector and its magnitude, and various quality flags. The data are available in annual ASCII files. To the instrument PI, Norman F. Ness, and to the Space Physics Data Facility at Goddard spase://SMWG/Person/Norman.F.Ness PrincipalInvestigator Readme file from SPDF https://spdf.gsfc.nasa.gov/pub/data/explorer/explorer35/gsfc_magnetometer/82s_mag_data_ascii/aareadme.txt spase://VHO/NumericalData/Explorer35/GSFC_Magnetometer/PT82S spase://VMO/NumericalData/Explorer35/GSFC_Magnetometer/PT82S spase://VSPO/NumericalData/Explorer35/GSFC_Magnetometer/PT82S spase://SMWG/Repository/NASA/GSFC/SPDF Online Open FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/explorer/explorer35/gsfc_magnetometer/82s_mag_data_ascii/ HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/explorer/explorer35/gsfc_magnetometer/82s_mag_data_ascii/ In CDF via HTTP from SPDF Text 315 MB To the instrument PI, Norman F. Ness, and to the Space Physics Data Facility at Goddard spase://SMWG/Repository/UCLA/VMO Online Open Virtual Magnetospheric Observatory http://vmo.igpp.ucla.edu/data1/Explorer/35/ Explorer 35 GSFC magnetometer data. Text NSSDC; Dr. Steve Joy Calibrated spase://SMWG/Instrument/Explorer35/GSFC_Magnetometer MagneticField 1967-07-19T00:00:00 1972-02-23T00:00:00 PT82S Heliosphere.NearEarth Universal Time Time Universal time columns from left to right are: year-month-day (yyyy-mm-dd) and seconds of the day. PT1S 5 Universal Time expressed using a 5-column year, day of year, hour, minute, second representation Year 1 Year Day of Year 2 Day of the year Hour 3 hour Minute 4 minute Second 5 second Temporal Field Magnitude Magnetic field magnitude Magnetic field magnitude for Explorer 35 in units of nT. PT82S nT Magnitude Magnetic Standard Deviation in the Field Magnitude Standard Deviation in the magnetic field magnitude Standard deviation in the magnetic field magnitude for Explorer 35 in units of nT. The magnitude give is an average over 82 s and the standard deviation is given with the mean value. PT82S nT StandardDeviation Magnetic GSE Bx, By, Bz Magnetic Field Vectors in GSE coordinates Magnetic field vector for Explorer 35 in GSE coordinate system in units of nT. PT82S nT Cartesian GSE 3 Bx Component.I 1 Bx By Component.J 2 By Bz Component.K 3 Bz Vector Magnetic Standard deviations of Magnetic Field Vectors Standard deviations of Magnetic Field Vectors in GSE coordinates Standard deviations for each magnetic field component for Explorer 35 in GSE coordinate system in units of nT. PT82S nT Cartesian GSE 3 Standard deviation of Bx Component.I 1 sigma Bx Standard deviation of By Component.J 2 sigma By Standard deviation of Bz Component.K 3 sigma Bz StandardDeviation Magnetic GSE B Latitutde and Azimuth Latitude and azimuthal direction of the magnetic field Latitude and azimuthal direction of the magnetic field for Explorer 35 in GSE coordinate system in units of degrees. PT82S degrees Spherical GSE 2 Latitude DirectionAngle.ElevationAngle 1 Latitude angle of the magnetic field. Azimuth DirectionAngle.AzimuthAngle 2 Azimuthal angle of the magnetic field. Directional Other GSM By, Bz Magnetic Field Vectors in GSM coordinates Magnetic field vector for Explorer 35 in GSM coordinate system in units of nT. PT82S nT Cartesian GSM 2 By Component.J 1 By Bz Component.K 2 Bz Vector Magnetic GSE X,Y,Z Position Vectors Location of the spacecraft in GSE coordinates in units of Re. PT82S Cartesian GSM 3 X Component.I 1 Xgsm Y Component.J 2 Ygsm Z Component.K 3 Zgsm Positional GSM Y,Z Position Vectors Location of the spacecraft in GSM coordinates in units of Re. PT82S Cartesian GSM 2 Y Component.J 1 Ygsm Z Component.K 2 Zgsm Positional Selenocentric Solar Ecliptic X,Y,Z Position Vectors Location of the spacecraft in Selenocentric Solar Ecliptic coordinates in units of lunar radii. PT82S Cartesian SSE 3 X Component.I 1 Xsse Y Component.J 2 Ysse Z Component.K 3 Zsse Positional Spacecraft spin period S/C spin period Spin period of the spacecraft in seconds. PT82S s Temporal Optical Aspect Time Optical aspect time Come from the optical apsect system on Explroer 35. It is unclear what the optical aspect time is a measure of. PT82S s Temporal Right Ascension and Declination Spin axis RA and Declination Right ascension and declination in GSE coordinates referenced to the earth equator and equinox of Julian Epoch 1950.0. PT82S degrees Spherical GSE 2 Right Ascension Component.J 1 RA Declination Component.K 2 Dec Positional Right Ascension and Declination Spin axis RA and Declination Right ascension and declination in GSM coordinates referenced to the earth equator and equinox of Julian Epoch 1950.0. PT82S degrees Spherical GSM 2 Right Ascension Component.J 1 RA Declination Component.K 2 Dec Positional F Ratio F Ratio F Ratio is {(RMS standard deviation in sequence-averaged field magnitude)/(sequence averaged field magnitude)}*100. PT82S Ratio Other Payload Bx, By, Bz Magnetic Field Vectors in spacecraft coordinates Magnetic field vector for Explorer 35 in spacecraft coordinate system in units of nT. PT82S nT Cartesian SC 3 Bx Component.I 1 Bx By Component.J 2 By Bz Component.K 3 Bz Vector Magnetic Standard deviations of Payload Magnetic Field Vectors Standard deviations of Magnetic Field Vectors in spacecraft coordinates Standard deviations for each magnetic field component for Explorer 35 in spacecraft coordinate system in units of nT. See N.F. Ness, Magnetometers for space research, Space Science Reviews November 1970, Volume 11, Issue 4, pp 459-554 for a good discussion on the payload coordinates. PT82S nT Cartesian SC 3 Standard deviation Bx Component.I 1 sigma Bx Standard deviation By Component.J 2 sigma By Standard deviation Bz Component.K 3 sigma Bz StandardDeviation Magnetic Payload B Latitutde and Azimuth Latitude and azimuthal direction of the magnetic field Latitude and azimuthal direction of the magnetic field for Explorer 35 in spacecraft coordinate system in units of degrees. PT82S degrees Spherical SC 2 Latitude DirectionAngle.ElevationAngle 1 Latitude angle of the magnetic field. Azimuth DirectionAngle.AzimuthAngle 2 Azimuthal angle of the magnetic field. Directional Other C Ratio C Ratio C Ratio is {[RMS(BxSE) + RMS(BySE) + RMS(BzSE)]/[SQRT(<BxSE>**2 + <BySE>**2 + <BzSE>**2)]}* 100/3. PT82S Ratio Other Data quality flag Data quality flag Data quality flags relate to spacecraft clock readings. A value of zero is best. PT82S InstrumentMode Experiment flag 1 Experiment flag The sensor flip state. It is unclear what each value indicates. PT82S Scalar InstrumentMode Experiment flag 2 Experiment flag State of the magnetometer: normal, flipping, or calibrating. It is unclear what each value indicates. PT82S Scalar InstrumentMode Experiment flag 3 Experiment flag The sensitivity level (+/-24 nT or ±64 nT) of the magnetometer. It is unclear what each value indicates. PT82S Scalar InstrumentMode Number of points in avgs # of points in avgs The number of data points used to get average values. PT82S Scalar Other Sequence Number Sequence # (clock) Spacecraft clock sequence number. PT82S Scalar Temporal Sequence ID Sequence ID It is unclear what each value indicates. PT82S Other