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Share sensitive information only on official, secure websites. HDPWS Data Access Virtual Magnetospheric Observatory SAC-C Mag-R: Calibrated CSC and raw IST data ResourceID spase://NASA/NumericalData/SAC-C/CSC/MAGR/PT1S Description This dataset contains 1 second measurements of the magnetic field vector from the Compact Spherical Coil (CSC) Fluxgate Vector Magnetometer and matrices describing rotation from J2000 reference system to stellar compass coordinate system and Earth Centered, Earth Fixed polar coordinates to J2000 reference system on the SAC-C spacecraft. 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/SAC-C/CSC/MAGR/PT1S NamingAuthority NASA ResourceType NumericalData ResourceHeader ResourceName SAC-C Mag-R: Calibrated CSC and raw IST data ReleaseDate 2025-12-04 13:31:22Z RevisionHistory RevisionEvent ReleaseDate 2020-07-07 21:15:17Z Note Only known prior ReleaseDate of the metadata RevisionEvent ReleaseDate 2025-12-04 13:31:22Z Note Added MetadataRightsList. Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB Description This dataset contains 1 second measurements of the magnetic field vector from the Compact Spherical Coil (CSC) Fluxgate Vector Magnetometer and matrices describing rotation from J2000 reference system to stellar compass coordinate system and Earth Centered, Earth Fixed polar coordinates to J2000 reference system on the SAC-C spacecraft. Acknowledgement Centre National d'Etudes Spatiales (France); National Aeronautics and Space Administration (United States); Danish Space Research Institute (Denmark); National Commission of Space Activities (CONAE) (Argentina); Instituto Nacional de Pesquisas Espaciais, Brazil (Brazil); Agenzia Spaziale Italiana (Italy) Contacts Role Person StartDate StopDate Note 1. ProjectScientist spase://SMWG/Person/UNKNOWN 2. MetadataContact spase://SMWG/Person/James.M.Weygand PriorIDs spase://VMO/NumericalData/SAC-C/CSC/MAGR/PT1S spase://VSPO/NumericalData/SAC-C/CSC/MAGR/PT1S AccessInformation RepositoryID spase://SMWG/Repository/SAC-C Availability Online AccessRights Open AccessURL Name Virtual Magnetospheric Observatory URL http://vmo.igpp.ucla.edu/data1/SAC-C/ Description Compact Spherical Coil Fluxgate Vector Magnetometer MAG-R data. Format Text Acknowledgement Centre National d'Etudes Spatiales (France); National Aeronautics and Space Administration (United States); Danish Space Research Institute (Denmark); National Commission of Space Activities (CONAE) (Argentina); Instituto Nacional de Pesquisas Espaciais, Brazil (Brazil); Agenzia Spaziale Italiana (Italy) ProcessingLevel Calibrated ProviderResourceName Compact Spherical Coil Fluxgate Vector Magnetometer MAG-R data ProviderProcessingLevel Calibrated InstrumentIDs spase://SMWG/Instrument/SAC-C/CSC MeasurementType MagneticField TemporalDescription TimeSpan StartDate 2001-02-01 00:00:00Z StopDate 2002-06-09 23:59:59Z Note It is not clear if additional data is available. Cadence PT1S ObservedRegion Earth.NearSurface ObservedRegion Earth.NearSurface.AuroralRegion ObservedRegion Earth.NearSurface.Ionosphere ObservedRegion Earth.NearSurface.PolarCap 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 2 Description Universal Time expressed using a 6-column day, month, year, hour, minute, second representation Element Name Year-Month-Day Index 1 ParameterKey Column_1-Column_2-Column_3 Element Name Second Index 2 ParameterKey Second Support SupportQuantity Temporal Parameter #2 Name SAC-C Spacecraft Position Vector in ECEF polar coordinates ParameterKey Position Vectors Description Location of the spacecraft in Earth Centered, Earth Fixed polar coordinates in units of Re and degrees. Cadence PT1S CoordinateSystem CoordinateRepresentation Spherical CoordinateSystemName ECEF Structure Size 3 Element Name Radius Qualifier Component.I Index 1 ParameterKey r Units km Element Name Theta Qualifier Component.J Index 2 ParameterKey theta Units degrees Element Name Phi Qualifier Component.K Index 3 ParameterKey Phi Units degrees Support SupportQuantity Positional Parameter #3 Name SAC-C CSC Magnetic Field Vector in CSC coordinates ParameterKey Magnetic Field Vectors Description Magnetic field vector for SAC-C in CSC coordinate system in units of nT. Cadence PT1S Units nT CoordinateSystem CoordinateRepresentation Cartesian CoordinateSystemName SC Structure Size 3 Element Name B1 Qualifier Component.I Index 1 ParameterKey B1 Element Name B2 Qualifier Component.J Index 2 ParameterKey B2 Element Name B3 Qualifier Component.K Index 3 ParameterKey B3 Field Qualifier Vector FieldQuantity Magnetic Parameter #4 Name J2000 to Stella compass quaternion ParameterKey J2000 2 SIM Description A quaternion describing the rotation from j2000 star coordinate system to the Italian Star Tracker system. Cadence PT1S Units unitless Structure Size 4 Element Name Q1 Qualifier Tensor Index 1 Element Name Q2 Qualifier Tensor Index 2 Element Name Q3 Qualifier Tensor Index 3 Element Name Q4 Qualifier Tensor Index 4 Support SupportQuantity Other Parameter #5 Name Earth Centered, Earth Fixed to J2000 quaternion ParameterKey ECEF 2 J2000 Description A quaternion describing the rotation from ECEF (Earth Centered, Earth Fixed) coordinate system (Note: not the local system) to the j2000 star coordinate system. Cadence PT1S Units unitless Structure Size 4 Element Name Q1 Qualifier Tensor Index 1 Element Name Q2 Qualifier Tensor Index 2 Element Name Q3 Qualifier Tensor Index 3 Element Name Q4 Qualifier Tensor Index 4 Support SupportQuantity Other Contact SPDF: NASA-SPDF Feedback/Support Responsible NASA Official: Lan Jian Site Editor: Rita Johnson SPDF ROR ID SPDF re3data ID About NASA Accessibility FOIA No FEAR Act Privacy Policy Vulnerability Disclosure Policy Last Updated: 2025-12-04