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Cassini Cruise Phase 1-Minute Magnetometer Data

(2025). Cassini Cruise Phase 1-Minute Magnetometer Data [Data set]. Space Physics Data Facility. https://doi.org/10.48322/gn88-1h66. Accessed on .

Note: Proper references, including those in BibTex or other formats, should include the "Accessed on date" as shown above to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/NumericalData/Cassini/MAG/Cruise.Phase/PT1M

Description

Cassini cruise phase 1-minute-averaged magnetic field data taken during the interval between mid-1999 when near-continuous magnetic field observations were begun and the mid-2004 insertion of Cassini into Saturn orbit. There are no planetary encounter data included. The data are in RTN coordinates. The data are mostly from the fluxgate magnetometer (FGM). The table at https://spdf.gsfc.nasa.gov/pub/data/cassini/vhm.txt identifies the 52 days in 2000-2004 for which the data are solely from the vector helium magnetometer (VHM). Days not in the table contain only FGM data. The data were produced from raw (L1A) data at the PDS/PPI node using software provided by the Cassini MAG team, and employing the latest calibration available. PDS/PPI produced both 1-sec vectors and 1-min averages. The MAG team reports that while range-0 data are well calibrated for both FGM and VHM, higher range data need improvement.

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Details

Version:2.7.1

MetadataRightsList

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 SPASE metadata descriptions

Version:2.7.1

NumericalData

ResourceID
spase://NASA/NumericalData/Cassini/MAG/Cruise.Phase/PT1M
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Cassini Cruise Phase 1-Minute Magnetometer Data
DOI
https://doi.org/10.48322/gn88-1h66
ReleaseDate
2025-12-04 13:29:01Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-03-10 20:13:28Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:01:56Z
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 13:29:01Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description

Cassini cruise phase 1-minute-averaged magnetic field data taken during the interval between mid-1999 when near-continuous magnetic field observations were begun and the mid-2004 insertion of Cassini into Saturn orbit. There are no planetary encounter data included. The data are in RTN coordinates. The data are mostly from the fluxgate magnetometer (FGM). The table at https://spdf.gsfc.nasa.gov/pub/data/cassini/vhm.txt identifies the 52 days in 2000-2004 for which the data are solely from the vector helium magnetometer (VHM). Days not in the table contain only FGM data. The data were produced from raw (L1A) data at the PDS/PPI node using software provided by the Cassini MAG team, and employing the latest calibration available. PDS/PPI produced both 1-sec vectors and 1-min averages. The MAG team reports that while range-0 data are well calibrated for both FGM and VHM, higher range data need improvement.

Acknowledgement
Please acknowledge the PI and the National Space Science Data Center for these data
PublicationInfo
Authors
Strangeway, Robert J.
PublicationDate
2025-11-14 16:01:56Z
PublishedBy
Space Physics Data Facility
Contacts
RolePersonStartDateStopDateNote
1.TechnicalContactspase://SMWG/Person/Natalia.E.Papitashvili
2.DataProducerspase://SMWG/Person/Raymond.J.Walker
3.PrincipalInvestigatorspase://SMWG/Person/Robert.J.Strangeway
InformationURL
PriorIDs
spase://VHO/NumericalData/Cassini/MAG/Cruise.Phase/PT1M
spase://VSPO/NumericalData/Cassini/MAG/ASCII/PT1M
spase://VSPO/NumericalData/P_CASSINI_MAG_1M
spase://VSPO/NumericalData/Cassini/MAG/PT60S
spase://VSPO/NumericalData/Cassini/MAG/Cruise.Phase/PT1M
AccessInformation
RepositoryID
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
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description

In ASCII via ftp from SPDF

AccessURL
Name
HTTPS from SPDF
URL
Description

In ASCII via HTTP from SPDF

Format
Text.ASCII
DataExtent
Quantity
54
Units
MB
Per
P1Y
InstrumentIDs
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
2000-01-01 00:00:00Z
StopDate
2004-12-31 23:59:59Z
Cadence
PT1M
ObservedRegion
Heliosphere.NearEarth
Parameter #1
Name
Time
ParameterKey
Column_1
Description

Time YYYY DOY HH MM for averages built from MM:00 to (MM+1):00

Caveats
Two changes were made to the PDS/PPI-provided files. First, PDS time tags of the format YYYY-MM-DDTHH:MM:DD were replaced by FTPBrowser time tags of the format YYYY DDD HH MM. Secondly, minutes with no data had no record in the PDS-provided files but have records, with all fill values except the time tags, in the FTPBrowser version.
Support
SupportQuantity
Temporal
Parameter #2
Name
Br
ParameterKey
Column_2
Description

BR, R component in RTN, nT

Units
nT
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
RTN
Field
Qualifier
Component.I
FieldQuantity
Magnetic
Parameter #3
Name
Bt
ParameterKey
Column_3
Description

BT, T component in RTN, nT

Units
nT
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
RTN
Field
Qualifier
Component.J
FieldQuantity
Magnetic
Parameter #4
Name
Bn
ParameterKey
Column_4
Description

BN, N component in RTN, nT

Units
nT
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
RTN
Field
Qualifier
Component.K
FieldQuantity
Magnetic
Parameter #5
Name
B
ParameterKey
Column_5
Description

B, field magnitude, nT

Units
nT
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
RTN
Field
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #6
Name
Range
ParameterKey
Column_6
Description

Heliocentric radial distance of spacecraft, AU

Units
AU
Support
SupportQuantity
Positional
Parameter #7
Name
Latitude
ParameterKey
Column_7
Description

Heliocentric latitude of spacecraft, deg.

Caveats
IHG is what NSSDC/SPDF typically refers to as HGI
Units
degrees
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HGI
Support
SupportQuantity
Positional
Parameter #8
Name
Longitude
ParameterKey
Column_8
Description

Longitude of spacecraft, East from Sun-Aries line, deg.

Caveats
IHG is what NSSDC/SPDF typically refers to as HGI
Units
degrees
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HGI
Support
SupportQuantity
Positional
Parameter #9
Name
X_IHG
ParameterKey
Column_9
Description

Inertial Heliographic X component of sun-to-spacecraft vector, AU

Caveats
IHG is what NSSDC/SPDF typically refers to as HGI
Units
AU
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HGI
Support
SupportQuantity
Positional
Parameter #10
Name
Y_IHG
ParameterKey
Column_10
Description

Inertial Heliographic Y component of sun-to-spacecraft vector, AU

Caveats
IHG is what NSSDC/SPDF typically refers to as HGI
Units
AU
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HGI
Support
SupportQuantity
Positional
Parameter #11
Name
Z_IHG
ParameterKey
Column_11
Description

Inertial Heliographic Z component of sun-to-spacecraft vector, AU

Caveats
IHG is what NSSDC/SPDF typically refers to as HGI
Units
AU
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HGI
Support
SupportQuantity
Positional
Parameter #12
Name
NPTS
ParameterKey
Column_12
Description

Number of 1-second values in the 1-minute average

Support
SupportQuantity
Other