HPDE.io

MESSENGER Magnetometer (MAG) Interplanetary Magnetic Field, Radial-Tangential-Normal, RTN, Coordinates, High Resolution, 1 s Data

ResourceID
spase://NASA/NumericalData/MESSENGER/MAG/PT0.05S

Description

This MESSENGER Magnetic field data set contains cruise-phase magnetic field vectors in RTN coordinates at time resolutions typically of 0.5 s or 1.0 s and sometimes as fine as 0.05 s.

The Mercury Surface, Space Environment, Geochemistry, and Ranging, MESSENGER, mission is designed to study the characteristics and environment of Mercury from orbit. The nominal orbit is planned to have a periapsis of 200 km at 60° N latitude, an apoapsis of 15,193 km, a period of 12 hours, and an inclination of 80°. The periapsis will slowly rise due to solar perturbations to over 400 km at the end of 88 days, one Mercury year, at which point it will be readjusted to a 200 km, 12 hour orbit via a two burn sequence. Data will be collected from orbit for one Earth year, the nominal primary mission was planned to end in March 2012.

Specifically, the scientific objectives of the mission are to characterize:

  • the chemical composition of the surface of Mercury
  • the geologic history
  • the nature of the magnetic field
  • the size and state of the core
  • the volatile inventory at the poles
  • the nature of the Hermean exosphere and magnetosphere

The MESSENGER mission should also yield:

  • global composition maps
  • a 3-D model of the magnetosphere of Mercury
  • topographic profiles of the northern hemisphere
  • gravity field to degree and order sixteen
  • altitude profiles of elemental species
  • a characterization of the volatiles in permanently shadowed craters at the poles

The MESSENGER spacecraft is a squat box (1.27 m ⨯ 1.42 m ⨯ 1.85 m) with a semi-cylindrical thermal shade, roughly 2.5 m tall and 2 m wide, for protection from the Sun and two solar panel wings extending radially about 6 m from tip to tip. Five science instruments are mounted externally on the bottom deck of the main body: the Mercury Dual Imaging System, MDIS, Gamma-Ray and Neutron Spectrometer, GRNS, X-ray Spectrometer, XRS, Mercury Laser Altimeter, MLA, and Atmospheric and Surface Composition Spectrometer, MASCS. Radio Science, RS, experiments will use the existing communications system. The Energetic Particle and Plasma Spectrometer, EPPS, is mounted on the side and top deck, and the magnetometer, MAG, is at the end of the 3.6 m boom.

The Messenger MAG instrument is a miniature three-axis ring-core fluxgate magnetometer with low-noise electronics. It is mounted on a 3.6 m boom in the anti-sunward direction. The MAG has ±1530 and ±51300 nT ranges with 20-bit internal resolution and 17-bit output resolution. The MAG probe samples magnetic field values along the X, Y, and Z axes at a rate of up to 20 samples/s. The rate is commandable and can vary. This data set has 3-axis calibrated samples of the magnetic field in heliospheric RTN coordinates, Br, Bt, Bn, in units of nT. The spacecraft position data in these files are identified by radial distance from the Sun, latitude above the ecliptic plane, and azimuth with respect to the Earth-Sun line in the ecliptic plane.

The MESSENGER Magnetometer data are also available from the Planetary Data System, Planetary Plasma Interactions, PDS/PPI, node via the URL; https://pds-ppi.igpp.ucla.edu/search/view/?f=yes&id=pds://PPI/MESS-E_V_H_SW-MAG-3-CDR-CALIBRATED-V1.0/DATA/RTN/. Hovever, the data are listed in plain text, space delimeted ASCII tables. Note that this SPASE Numerical Description only describes the MESSENGER Magnetometer data stored in Common Data Files.

View XML | View JSON | Edit

Details

Version:2.3.2

NumericalData

ResourceID
spase://NASA/NumericalData/MESSENGER/MAG/PT0.05S
ResourceHeader
ResourceName
MESSENGER Magnetometer (MAG) Interplanetary Magnetic Field, Radial-Tangential-Normal, RTN, Coordinates, High Resolution, 1 s Data
ReleaseDate
2021-04-27 15:38:11Z
Description

This MESSENGER Magnetic field data set contains cruise-phase magnetic field vectors in RTN coordinates at time resolutions typically of 0.5 s or 1.0 s and sometimes as fine as 0.05 s.

The Mercury Surface, Space Environment, Geochemistry, and Ranging, MESSENGER, mission is designed to study the characteristics and environment of Mercury from orbit. The nominal orbit is planned to have a periapsis of 200 km at 60° N latitude, an apoapsis of 15,193 km, a period of 12 hours, and an inclination of 80°. The periapsis will slowly rise due to solar perturbations to over 400 km at the end of 88 days, one Mercury year, at which point it will be readjusted to a 200 km, 12 hour orbit via a two burn sequence. Data will be collected from orbit for one Earth year, the nominal primary mission was planned to end in March 2012.

Specifically, the scientific objectives of the mission are to characterize:

  • the chemical composition of the surface of Mercury
  • the geologic history
  • the nature of the magnetic field
  • the size and state of the core
  • the volatile inventory at the poles
  • the nature of the Hermean exosphere and magnetosphere

The MESSENGER mission should also yield:

  • global composition maps
  • a 3-D model of the magnetosphere of Mercury
  • topographic profiles of the northern hemisphere
  • gravity field to degree and order sixteen
  • altitude profiles of elemental species
  • a characterization of the volatiles in permanently shadowed craters at the poles

The MESSENGER spacecraft is a squat box (1.27 m ⨯ 1.42 m ⨯ 1.85 m) with a semi-cylindrical thermal shade, roughly 2.5 m tall and 2 m wide, for protection from the Sun and two solar panel wings extending radially about 6 m from tip to tip. Five science instruments are mounted externally on the bottom deck of the main body: the Mercury Dual Imaging System, MDIS, Gamma-Ray and Neutron Spectrometer, GRNS, X-ray Spectrometer, XRS, Mercury Laser Altimeter, MLA, and Atmospheric and Surface Composition Spectrometer, MASCS. Radio Science, RS, experiments will use the existing communications system. The Energetic Particle and Plasma Spectrometer, EPPS, is mounted on the side and top deck, and the magnetometer, MAG, is at the end of the 3.6 m boom.

The Messenger MAG instrument is a miniature three-axis ring-core fluxgate magnetometer with low-noise electronics. It is mounted on a 3.6 m boom in the anti-sunward direction. The MAG has ±1530 and ±51300 nT ranges with 20-bit internal resolution and 17-bit output resolution. The MAG probe samples magnetic field values along the X, Y, and Z axes at a rate of up to 20 samples/s. The rate is commandable and can vary. This data set has 3-axis calibrated samples of the magnetic field in heliospheric RTN coordinates, Br, Bt, Bn, in units of nT. The spacecraft position data in these files are identified by radial distance from the Sun, latitude above the ecliptic plane, and azimuth with respect to the Earth-Sun line in the ecliptic plane.

The MESSENGER Magnetometer data are also available from the Planetary Data System, Planetary Plasma Interactions, PDS/PPI, node via the URL; https://pds-ppi.igpp.ucla.edu/search/view/?f=yes&id=pds://PPI/MESS-E_V_H_SW-MAG-3-CDR-CALIBRATED-V1.0/DATA/RTN/. Hovever, the data are listed in plain text, space delimeted ASCII tables. Note that this SPASE Numerical Description only describes the MESSENGER Magnetometer data stored in Common Data Files.

Acknowledgement
Please acknowledge the Principal Investigator S.C. Solomon and the instrument scientist, Brian Anderson for use of the Data
Contacts
RolePerson
1.PrincipalInvestigatorspase://SMWG/Person/Sean.C.Solomon
2.PrincipalInvestigatorspase://SMWG/Person/Brian.J.Anderson
3.MetadataContactspase://SMWG/Person/Robert.M.Candey
4.MetadataContactspase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
NSSDC Master Catalog, MESSENGER, MAG instrument
URL
Description

General information concerning the MESSENGER, Magnetometer, MAG, instrument

Language
en
InformationURL
Name
MESSENGER Magnetometer data, PDS-PPI
URL
Description

MESSENGER Magnetometer, MAG, calibrated data. This volume contains the MAG data from Earth to Mercury over the time interval 2004-08-12 to 2015-04-30, hosted by the Planetary Data System, Planetary Plasma Interactions node, PSD-PPI.

Language
en
InformationURL
Name
PDS Data Descriptive page
URL
Description

The MESSENGER Magnetometer, MAG, calibrated observations consist of time and position tagged magnetic field samples in physical units and coordinate systems collected by the MAG instrument during fly-by and orbital operations of Mercury. See information given for time intervals more likely to have data quality issues.

Language
en
InformationURL
Name
MESSENGER Magnetometer, MAG, instrument, Space Science Reviews publication
URL
Description

Anderson, B.J., M.H. Acuna, D.A. Lohr, J. Scheifele, A. Raval, H. Korth, and J.A. Slavin, The Magnetometer instrument on MESSENGER, Space Sci. Rev., 2007, DOI: 10.1007/s11214-007-9246-7.

Language
en
PriorIDs
spase://VSPO/NumericalData/MESSENGER/MAG/PT0.05S
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description

Access to Data in CDF Format via ftp from SPDF

AccessURL
Name
HTTPS from SPDF
URL
Description

Access to Data in CDF Format via http from SPDF

AccessURL
Name
CDAWeb
URL
ProductKey
MESSENGER_MAG_RTN
Description

Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb

Format
CDF
Encoding
None
Acknowledgement
Please acknowledge the Principal Investigator S.C. Solomon and the instrument scientist, Brian Anderson. Please acknowledge the Data Providers, CDAWeb, and the organization from which the data were acquired.
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
Style
HAPI
ProductKey
MESSENGER_MAG_RTN@0
ProductKey
MESSENGER_MAG_RTN@1
Description

Web Service to this product using the HAPI interface.

Format
CSV
Acknowledgement
Please acknowledge the Principal Investigator S.C. Solomon and the instrument scientist, Brian Anderson. Please acknowledge the Data Providers, CDAWeb, and the organization from which the data were acquired.
ProcessingLevel
Calibrated
InstrumentIDs
MeasurementType
Ephemeris
MeasurementType
InstrumentStatus
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
2004-08-12 17:44:08.000
StopDate
2011-05-18 00:00:09.000
Cadence
PT0.05S
Parameter #1
Name
Epoch Time
ParameterKey
Epoch
Description

Epoch Time Tag, Number of ms since the Epoch

Caveats
This Parameter exhibits an increasing Monotonic Progression
Cadence
PT0.05S
Units
ms
UnitsConversion
1.0e-3>s
RenderingHints
AxisLabel
Epoch
ValueFormat
E14.8
ScaleMin
6.2985233019904e+13
ScaleMax
6.2985319419904e+13
ValidMin
12-Nov-1994 00:00:00.000
ValidMax
31-Dec-2030 00:00:00.000
FillValue
31-Dec-9999 23:59:59.999
Support
SupportQuantity
Temporal
Parameter #2
Name
Mission Elapsed Time, MET
Set
Time series defined by using: EPOCH
ParameterKey
MissionElapsedTime
Description

Mission Elapsed Time, MET, for the entire science packet

Caveats
The MET value is dericed by using the following formula: MET+0.05*delta_ts+(dt_sample)*(I-1)-latency. MET is the mission elapsed time for the entire science packet. The variable delta_ts corresponds to the delta time in seconds between the MET and the first sample in the downloaded science packet. The variable dt_sample is the time between samples in seconds and is equal to the inverse of sample_rate where sample_rate is the reported sample rate in samples per second is the incremental counter for each data sample in the science packet equal t denotes the first sample in the packet. Latency is the sample rate-dependent delay of the time stamp recording relative to the actual time of observation.
Cadence
PT0.05S
Units
s
RenderingHints
AxisLabel
Mission elap time
ValueFormat
E15.8
ValidMin
0.0
ValidMax
1.0e+11
FillValue
-1.0e+31
Support
Qualifier
Scalar
SupportQuantity
Temporal
Parameter #3
Name
Spacecraft Position, Heliocentric Radial Distance
Set
Time series defined by using: EPOCH
ParameterKey
radialDistance
Description

Spacecraft Position, Heliocentric Radial Distance, R

Cadence
PT0.05S
Units
km
UnitsConversion
1.0e3>m
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
RenderingHints
DisplayType
TimeSeries
AxisLabel
S/C Radial Dist
ValueFormat
E15.7
ValidMin
-1.0e+11
ValidMax
1.0e+11
FillValue
-1.0e+31
Support
Qualifier
Magnitude
Qualifier
Scalar
SupportQuantity
Velocity
Parameter #4
Name
Spacecraft Position, Latitude, HEE Spherical Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
latitude_ecliptic
Description

Spacecraft Position, Latitude, Heliocentric Earth Ecliptic, HEE, Spherical Coordinates

Cadence
PT0.05S
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
RenderingHints
DisplayType
TimeSeries
AxisLabel
S/C Latitude
ValueFormat
F12.4
ValidMin
-90.0
ValidMax
90.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.ElevationAngle
Qualifier
Scalar
SupportQuantity
Velocity
Parameter #5
Name
Spacecraft Position, Longitude, HEE Spherical Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
azimuth_ecliptic
Description

Spacecraft Position, Longitude, Heliocentric Earth Ecliptic, HEE, Spherical Coordinates

Caveats
Azimuthal angle of MESSENGER spacecraft in the instantaneous ecliptic plane with respect to the Earth-Sun line in units of degrees, positive in direction of the orbital motion of the Earth wit in J2000 coordinates
Cadence
PT0.05S
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
RenderingHints
DisplayType
TimeSeries
AxisLabel
S/c Azimuth
ValueFormat
F12.2
ValidMin
-360.0
ValidMax
360.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.AzimuthAngle
Qualifier
Scalar
SupportQuantity
Velocity
Parameter #6
Name
Magnetic Field Radial Component, RTN
Set
Time series defined by using: EPOCH
ParameterKey
B_radial
Description

Magnetic Field Radial Component, Br, Radial-Tangential-Normal, RTN, Cartesian Coordinates

Cadence
PT0.05S
Units
nT
UnitsConversion
1.0e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
RTN
RenderingHints
DisplayType
TimeSeries
AxisLabel
Br (All Quals)
ValueFormat
F10.3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
-1.0e+31
Field
Qualifier
Component.I
Qualifier
Scalar
FieldQuantity
Magnetic
Parameter #7
Name
Magnetic Field Tangential Component, RTN
Set
Time series defined by using: EPOCH
ParameterKey
B_tangential
Description

Magnetic Field Tangential Component, Bt, Radial-Tangential-Normal, RTN, Cartesian Coordinates

Cadence
PT0.05S
Units
nT
UnitsConversion
1.0e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
RTN
RenderingHints
DisplayType
TimeSeries
AxisLabel
Bt (All Quals)
ValueFormat
F10.3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
-1.0e+31
Field
Qualifier
Component.J
Qualifier
Scalar
FieldQuantity
Magnetic
Parameter #8
Name
Magnetic Field Normal Component, RTN
Set
Time series defined by using: EPOCH
ParameterKey
B_normal
Description

Magnetic Field Normal Component, Bn, Radial-Tangential-Normal, RTN, Cartesian Coordinates

Cadence
PT0.05S
Units
nT
UnitsConversion
1.0e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
RTN
RenderingHints
DisplayType
TimeSeries
AxisLabel
Bn (All Quals)
ValueFormat
F10.3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
-1.0e+31
Field
Qualifier
Component.K
Qualifier
Scalar
FieldQuantity
Magnetic
Parameter #9
Name
Data Quality Flag
Set
Time series defined by using: EPOCH
ParameterKey
Quality_Flag
Description

Data Quality Flag: a three digit daily quality flag, a value equal to 222 or 223 denotes a good condition with boom deployed, sensor in shadow, and all heater contamination corrected

Cadence
PT0.05S
RenderingHints
DisplayType
TimeSeries
AxisLabel
Quality Flag
ValueFormat
I3
ValidMin
0
ValidMax
999
FillValue
-2147483648
Support
Qualifier
Scalar
SupportQuantity
Velocity