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} function getVersionedBibTeX(bibtex) { /* Add version field as suggested by August (Gus) Muench, Journals Data Editor, American Astronomical Society (email dated 7/7/25) */ const accessVersion = ", version={Accessed on " + currentIsoDateStr + "}"; const modifiedBibtex = bibtex.substring(0, bibtex.lastIndexOf("}")) + accessVersion + "}"; return modifiedBibtex; } function getBlob(text) { return new Blob([text], { type: "text/plain"}); } function clipboardAlert(text) { alert(text + "\nCopied to clipboard"); } function clipCitation(doi) { document.body.style.cursor = 'wait'; let url = "https://citation.doi.org/format?doi=" + doi.replace("https://doi.org/", "") + String.fromCodePoint(38) + "style=bibtex" + String.fromCodePoint(38) + "lang=en-US"; const text = new ClipboardItem({ "text/plain": fetch(url) .then(getResponseText) .then(getVersionedBibTeX) .then(getBlob) }); navigator.clipboard.write([text]); text.getType("text/plain") .then(getResponseText) .then(clipboardAlert); } function toggle_usa_banner_details() { const details = document.getElementById("usa-banner-details"); const indicator = document.getElementById("usa-banner-indicator"); if (details.style.display === "none") { details.style.display = "block"; indicator.textContent = "^"; } else { details.style.display = "none"; indicator.textContent = "v"; } } const monthName=new Array("January","February","March","April","May","June","July","August","September","October","November","December"); let currentDate = new Date(); let currentIsoDateStr = currentDate.toISOString().substring(0, 10); let currentDateStr = currentDate.getFullYear() + '-' + monthName[currentDate.getMonth()] + '-' + currentDate.getDate(); Data Access FTPS from SPDF (not with most browsers) HTTPS from SPDF Virtual Magnetospheric Observatory Explorer 35 Goddard Space Flight Center Magnetometer data var authors='Ness, Norman F.'; document.write(authors); (2025). Explorer 35 Goddard Space Flight Center Magnetometer data. [Data set]. University of California, Los Angeles. https://doi.org/10.48322/nja4-6x02. Accessed on document.write(currentDateStr);. Note: Proper references, including Copy BibTeX Citation or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication. ResourceID spase://NASA/NumericalData/Explorer35/GSFC_Magnetometer/PT82S Description 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. Metadata Rights CC0-1.0: Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license. View XML | Edit Details Version:2.7.1 NumericalData ResourceID spase://NASA/NumericalData/Explorer35/GSFC_Magnetometer/PT82S NamingAuthority NASA ResourceType NumericalData ResourceHeader ResourceName Explorer 35 Goddard Space Flight Center Magnetometer data AlternateName IMP 2 Goddard Space Flight Center Magnetometer data AlternateName IMP-E Goddard Space Flight Center Magnetometer data AlternateName AIMP 2 Goddard Space Flight Center Magnetometer data DOI https://doi.org/10.48322/nja4-6x02 ReleaseDate 2025-12-04 13:29:11Z RevisionHistory RevisionEvent ReleaseDate 2021-03-11 18:39:11Z Note Only known prior ReleaseDate of the metadata RevisionEvent ReleaseDate 2025-11-14 16:03:09Z Note Added PublicationInfo. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB RevisionEvent ReleaseDate 2025-12-04 13:29:11Z Note Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB Description 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. Acknowledgement To the instrument PI, Norman F. Ness, and to the Space Physics Data Facility at Goddard PublicationInfo Authors Ness, Norman F. PublicationDate 2025-11-14 16:03:09Z PublishedBy University of California, Los Angeles Contacts Role Person StartDate StopDate Note 1. PrincipalInvestigator spase://SMWG/Person/Norman.F.Ness InformationURL Name Readme file from SPDF URL https://spdf.gsfc.nasa.gov/pub/data/explorer/explorer35/gsfc_magnetometer/82s_mag_data_ascii/aareadme.txt PriorIDs spase://VHO/NumericalData/Explorer35/GSFC_Magnetometer/PT82S spase://VMO/NumericalData/Explorer35/GSFC_Magnetometer/PT82S spase://VSPO/NumericalData/Explorer35/GSFC_Magnetometer/PT82S AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF Availability Online AccessRights Open RightsList Rights SchemeURI https://spdx.org/licenses/ RightsIdentifierScheme SPDX RightsIdentifier CC0-1.0 RightsURI https://spdx.org/licenses/CC0-1.0.html RightsName Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products AccessURL Name FTPS from SPDF (not with most browsers) URL ftps://spdf.gsfc.nasa.gov/pub/data/explorer/explorer35/gsfc_magnetometer/82s_mag_data_ascii/ AccessURL Name HTTPS from SPDF URL https://spdf.gsfc.nasa.gov/pub/data/explorer/explorer35/gsfc_magnetometer/82s_mag_data_ascii/ Description In CDF via HTTP from SPDF Format Text DataExtent Quantity 315 Units MB Acknowledgement To the instrument PI, Norman F. Ness, and to the Space Physics Data Facility at Goddard AccessInformation RepositoryID spase://SMWG/Repository/UCLA/VMO Availability Online AccessRights Open AccessURL Name Virtual Magnetospheric Observatory URL http://vmo.igpp.ucla.edu/data1/Explorer/35/ Description Explorer 35 GSFC magnetometer data. Format Text Acknowledgement NSSDC; Dr. Steve Joy ProcessingLevel Calibrated InstrumentIDs spase://SMWG/Instrument/Explorer35/GSFC_Magnetometer MeasurementType MagneticField TemporalDescription TimeSpan StartDate 1967-07-19 00:00:00 StopDate 1972-02-23 00:00:00 Cadence PT82S ObservedRegion Heliosphere.NearEarth Parameter #1 Name Universal Time ParameterKey Time Description Universal time columns from left to right are: year-month-day (yyyy-mm-dd) and seconds of the day. Cadence PT1S Structure Size 5 Description Universal Time expressed using a 5-column year, day of year, hour, minute, second representation Element Name Year Index 1 ParameterKey Year Element Name Day of Year Index 2 ParameterKey Day of the year Element Name Hour Index 3 ParameterKey hour Element Name Minute Index 4 ParameterKey minute Element Name Second Index 5 ParameterKey second Support SupportQuantity Temporal Parameter #2 Name Field Magnitude ParameterKey Magnetic field magnitude Description Magnetic field magnitude for Explorer 35 in units of nT. Cadence PT82S Units nT Field Qualifier Magnitude FieldQuantity Magnetic Parameter #3 Name Standard Deviation in the Field Magnitude ParameterKey Standard Deviation in the magnetic field magnitude Description 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. Cadence PT82S Units nT Field Qualifier StandardDeviation FieldQuantity Magnetic Parameter #4 Name GSE Bx, By, Bz ParameterKey Magnetic Field Vectors in GSE coordinates Description Magnetic field vector for Explorer 35 in GSE coordinate system in units of nT. Cadence PT82S Units nT CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GSE Structure Size 3 Element Name Bx Qualifier Component.I Index 1 ParameterKey Bx Element Name By Qualifier Component.J Index 2 ParameterKey By Element Name Bz Qualifier Component.K Index 3 ParameterKey Bz Field Qualifier Vector FieldQuantity Magnetic Parameter #5 Name Standard deviations of Magnetic Field Vectors ParameterKey Standard deviations of Magnetic Field Vectors in GSE coordinates Description Standard deviations for each magnetic field component for Explorer 35 in GSE coordinate system in units of nT. Cadence PT82S Units nT CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GSE Structure Size 3 Element Name Standard deviation of Bx Qualifier Component.I Index 1 ParameterKey sigma Bx Element Name Standard deviation of By Qualifier Component.J Index 2 ParameterKey sigma By Element Name Standard deviation of Bz Qualifier Component.K Index 3 ParameterKey sigma Bz Field Qualifier StandardDeviation FieldQuantity Magnetic Parameter #6 Name GSE B Latitutde and Azimuth ParameterKey Latitude and azimuthal direction of the magnetic field Description Latitude and azimuthal direction of the magnetic field for Explorer 35 in GSE coordinate system in units of degrees. Cadence PT82S Units degrees CoordinateSystem CoordinateRepresentation Spherical CoordinateSystemName GSE Structure Size 2 Element Name Latitude Qualifier DirectionAngle.ElevationAngle Index 1 ParameterKey Latitude angle of the magnetic field. Element Name Azimuth Qualifier DirectionAngle.AzimuthAngle Index 2 ParameterKey Azimuthal angle of the magnetic field. Support Qualifier Directional SupportQuantity Other Parameter #7 Name GSM By, Bz ParameterKey Magnetic Field Vectors in GSM coordinates Description Magnetic field vector for Explorer 35 in GSM coordinate system in units of nT. Cadence PT82S Units nT CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GSM Structure Size 2 Element Name By Qualifier Component.J Index 1 ParameterKey By Element Name Bz Qualifier Component.K Index 2 ParameterKey Bz Field Qualifier Vector FieldQuantity Magnetic Parameter #8 Name GSE X,Y,Z ParameterKey Position Vectors Description Location of the spacecraft in GSE coordinates in units of Re. Cadence PT82S CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GSM Structure Size 3 Element Name X Qualifier Component.I Index 1 ParameterKey Xgsm Element Name Y Qualifier Component.J Index 2 ParameterKey Ygsm Element Name Z Qualifier Component.K Index 3 ParameterKey Zgsm Support SupportQuantity Positional Parameter #9 Name GSM Y,Z ParameterKey Position Vectors Description Location of the spacecraft in GSM coordinates in units of Re. Cadence PT82S CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName GSM Structure Size 2 Element Name Y Qualifier Component.J Index 1 ParameterKey Ygsm Element Name Z Qualifier Component.K Index 2 ParameterKey Zgsm Support SupportQuantity Positional Parameter #10 Name Selenocentric Solar Ecliptic X,Y,Z ParameterKey Position Vectors Description Location of the spacecraft in Selenocentric Solar Ecliptic coordinates in units of lunar radii. Cadence PT82S CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName SSE Structure Size 3 Element Name X Qualifier Component.I Index 1 ParameterKey Xsse Element Name Y Qualifier Component.J Index 2 ParameterKey Ysse Element Name Z Qualifier Component.K Index 3 ParameterKey Zsse Support SupportQuantity Positional Parameter #11 Name Spacecraft spin period ParameterKey S/C spin period Description Spin period of the spacecraft in seconds. Cadence PT82S Units s Support SupportQuantity Temporal Parameter #12 Name Optical Aspect Time ParameterKey Optical aspect time Description Come from the optical apsect system on Explroer 35. It is unclear what the optical aspect time is a measure of. Cadence PT82S Units s Support SupportQuantity Temporal Parameter #13 Name Right Ascension and Declination ParameterKey Spin axis RA and Declination Description Right ascension and declination in GSE coordinates referenced to the earth equator and equinox of Julian Epoch 1950.0. Cadence PT82S Units degrees CoordinateSystem CoordinateRepresentation Spherical CoordinateSystemName GSE Structure Size 2 Element Name Right Ascension Qualifier Component.J Index 1 ParameterKey RA Element Name Declination Qualifier Component.K Index 2 ParameterKey Dec Support SupportQuantity Positional Parameter #14 Name Right Ascension and Declination ParameterKey Spin axis RA and Declination Description Right ascension and declination in GSM coordinates referenced to the earth equator and equinox of Julian Epoch 1950.0. Cadence PT82S Units degrees CoordinateSystem CoordinateRepresentation Spherical CoordinateSystemName GSM Structure Size 2 Element Name Right Ascension Qualifier Component.J Index 1 ParameterKey RA Element Name Declination Qualifier Component.K Index 2 ParameterKey Dec Support SupportQuantity Positional Parameter #15 Name F Ratio ParameterKey F Ratio Description F Ratio is {(RMS standard deviation in sequence-averaged field magnitude)/(sequence averaged field magnitude)}*100. Cadence PT82S Support Qualifier Ratio SupportQuantity Other Parameter #16 Name Payload Bx, By, Bz ParameterKey Magnetic Field Vectors in spacecraft coordinates Description Magnetic field vector for Explorer 35 in spacecraft coordinate system in units of nT. Cadence PT82S Units nT CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName SC Structure Size 3 Element Name Bx Qualifier Component.I Index 1 ParameterKey Bx Element Name By Qualifier Component.J Index 2 ParameterKey By Element Name Bz Qualifier Component.K Index 3 ParameterKey Bz Field Qualifier Vector FieldQuantity Magnetic Parameter #17 Name Standard deviations of Payload Magnetic Field Vectors ParameterKey Standard deviations of Magnetic Field Vectors in spacecraft coordinates Description 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. Cadence PT82S Units nT CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName SC Structure Size 3 Element Name Standard deviation Bx Qualifier Component.I Index 1 ParameterKey sigma Bx Element Name Standard deviation By Qualifier Component.J Index 2 ParameterKey sigma By Element Name Standard deviation Bz Qualifier Component.K Index 3 ParameterKey sigma Bz Field Qualifier StandardDeviation FieldQuantity Magnetic Parameter #18 Name Payload B Latitutde and Azimuth ParameterKey Latitude and azimuthal direction of the magnetic field Description Latitude and azimuthal direction of the magnetic field for Explorer 35 in spacecraft coordinate system in units of degrees. Cadence PT82S Units degrees CoordinateSystem CoordinateRepresentation Spherical CoordinateSystemName SC Structure Size 2 Element Name Latitude Qualifier DirectionAngle.ElevationAngle Index 1 ParameterKey Latitude angle of the magnetic field. Element Name Azimuth Qualifier DirectionAngle.AzimuthAngle Index 2 ParameterKey Azimuthal angle of the magnetic field. Support Qualifier Directional SupportQuantity Other Parameter #19 Name C Ratio ParameterKey C Ratio Description C Ratio is {[RMS(BxSE) + RMS(BySE) + RMS(BzSE)]/[SQRT(<BxSE>**2 + <BySE>**2 + <BzSE>**2)]}* 100/3. Cadence PT82S Support Qualifier Ratio SupportQuantity Other Parameter #20 Name Data quality flag ParameterKey Data quality flag Description Data quality flags relate to spacecraft clock readings. A value of zero is best. Cadence PT82S Support SupportQuantity InstrumentMode Parameter #21 Name Experiment flag 1 ParameterKey Experiment flag Description The sensor flip state. It is unclear what each value indicates. Cadence PT82S Support Qualifier Scalar SupportQuantity InstrumentMode Parameter #22 Name Experiment flag 2 ParameterKey Experiment flag Description State of the magnetometer: normal, flipping, or calibrating. It is unclear what each value indicates. Cadence PT82S Support Qualifier Scalar SupportQuantity InstrumentMode Parameter #23 Name Experiment flag 3 ParameterKey Experiment flag Description The sensitivity level (+/-24 nT or ±64 nT) of the magnetometer. It is unclear what each value indicates. Cadence PT82S Support Qualifier Scalar SupportQuantity InstrumentMode Parameter #24 Name Number of points in avgs ParameterKey # of points in avgs Description The number of data points used to get average values. Cadence PT82S Support Qualifier Scalar SupportQuantity Other Parameter #25 Name Sequence Number ParameterKey Sequence # (clock) Description Spacecraft clock sequence number. Cadence PT82S Support Qualifier Scalar SupportQuantity Temporal Parameter #26 Name Sequence ID ParameterKey Sequence ID Description It is unclear what each value indicates. Cadence PT82S Support SupportQuantity Other