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Vega 1 Magnetic Field Data (0.1 s), Halley Comet

ResourceID
spase://NASA/NumericalData/Vega1/MISCHA/FLYBY/PT0.1S

Description

This product contains high-resolution (0.1 s) magnetic field data for intervals of the closest approach of the Vega 1 spacecraft to Halley comet. Magnetic field and position data are in the cometocentric solar ecliptic (CSE) coordinate system. CSE coordinate system for the spacecraft position: * Origin is at comet position, x-axis from comet to the Sun, z-axis to ecliptic northpole. * The (x,y)-plane is parallel to the ecliptic plane. CSE coordinate system for the magnetic field data: * Axes are parallel to the CSE system for the position. * This coordinate system is valid only for very short time, about 4 hours around the closest approach of the spacecraft to the comet, since for a larger angular distance of the spacecraft from the comet, the direction to the Sun from both objects will be different.

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Details

Version:2.2.9

NumericalData

ResourceID
spase://NASA/NumericalData/Vega1/MISCHA/FLYBY/PT0.1S
ResourceHeader
ResourceName
Vega 1 Magnetic Field Data (0.1 s), Halley Comet
ReleaseDate
2020-07-07 21:15:50Z
Description

This product contains high-resolution (0.1 s) magnetic field data for intervals of the closest approach of the Vega 1 spacecraft to Halley comet. Magnetic field and position data are in the cometocentric solar ecliptic (CSE) coordinate system. CSE coordinate system for the spacecraft position: * Origin is at comet position, x-axis from comet to the Sun, z-axis to ecliptic northpole. * The (x,y)-plane is parallel to the ecliptic plane. CSE coordinate system for the magnetic field data: * Axes are parallel to the CSE system for the position. * This coordinate system is valid only for very short time, about 4 hours around the closest approach of the spacecraft to the comet, since for a larger angular distance of the spacecraft from the comet, the direction to the Sun from both objects will be different.

Acknowledgement
Use of these data in publications should be accompanied by acknowledgements of the National Space Science Data Center(NSSDC), Space Physics Data Facility(SPDF) and IZMIRAN at Moscow.
Contacts
RolePersonStartDateStopDateNote
1.GeneralContactspase://SMWG/Person/Valery.G.Petrov
2.DataProducerspase://SMWG/Person/Valery.A.Styazhkin
3.TechnicalContactspase://SMWG/Person/Natalia.E.Papitashvili
4.MetadataContactspase://SMWG/Person/Jan.Merka
PriorIDs
spase://VHO/NumericalData/Vega1/MISCHA/FLYBY.PT0.1S
spase://VSPO/NumericalData/Vega1/MISCHA/FLYBY/PT0.1S
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description

FTP access to Vega mission data at NSSDC.

AccessURL
Name
HTTPS from SPDF
URL
Description

In CDF via HTTP from SPDF

Format
Text.ASCII
Encoding
ASCII
InstrumentIDs
MeasurementType
MagneticField
MeasurementType
Ephemeris
TemporalDescription
TimeSpan
StartDate
1986-03-06 04:21:01Z
StopDate
1986-03-06 08:24:24Z
Cadence
PT0.1S
ObservedRegion
Heliosphere.Inner
ObservedRegion
Comet
Caveats
The CSE coordinate system for magnetic field data is valid only for very short time, about 4 hours around the closest approach of the spacecraft to the comet, since for a larger angular distance of the spacecraft from the comet, the direction to the Sun from both objects will be different.
Parameter #1
Name
Year
ParameterKey
Column 1
Description

Time of observation (year)

Support
SupportQuantity
Temporal
Parameter #2
Name
Month
ParameterKey
Column 2
Description

Time of observation (month of year)

Support
SupportQuantity
Temporal
Parameter #3
Name
Day
ParameterKey
Column 3
Description

Time of observation (day of month)

Support
SupportQuantity
Temporal
Parameter #4
Name
Hour
ParameterKey
Column 4
Description

Time of observation (hour of day)

Support
SupportQuantity
Temporal
Parameter #5
Name
Minute
ParameterKey
Column 5
Description

Time of observation (minute)

Support
SupportQuantity
Temporal
Parameter #6
Name
Second
ParameterKey
Column 6
Description

Time of observation (second)

Units
s
Support
SupportQuantity
Temporal
Parameter #7
Name
Bx
ParameterKey
Column 7
Description

Magnetic field X in CSE coordinate system

Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Field
Qualifier
Component.I
Qualifier
Average
FieldQuantity
Magnetic
Parameter #8
Name
By
ParameterKey
Column 8
Description

Magnetic field By component in CSE coordinate system

Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Field
Qualifier
Component.J
Qualifier
Average
FieldQuantity
Magnetic
Parameter #9
Name
Bz
ParameterKey
Column 9
Description

Magnetic field Bz component in CSE coordinate system

Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Field
Qualifier
Component.K
Qualifier
Average
FieldQuantity
Magnetic
Parameter #10
Name
B
ParameterKey
Column 10
Description

Magnetic field magnitude, nT

Units
nT
UnitsConversion
1e-9>T
FillValue
9999.9
Field
Qualifier
Magnitude
Qualifier
Average
FieldQuantity
Magnetic
Parameter #11
Name
X
ParameterKey
Column 11
Description

X component of spacecraft position in CSE coordinates (Cometocentric ecliptic coordinate system)

Units
km
UnitsConversion
1e3>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Support
Qualifier
Component.I
SupportQuantity
Positional
Parameter #12
Name
Yse
ParameterKey
Column 12
Description

Y component of spacecraft position in CSE coordinates (Cometocentric ecliptic coordinate system)

Units
km
UnitsConversion
1e3>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Support
Qualifier
Component.J
SupportQuantity
Positional
Parameter #13
Name
Zse
ParameterKey
Column 13
Description

Z component of spacecraft position in CSE coordinates (Cometocentric ecliptic coordinate system)

Units
km
UnitsConversion
1e3>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Support
Qualifier
Component.K
SupportQuantity
Positional
Parameter #14
Name
Dist
ParameterKey
Column 14
Description

Distance between spacecraft and Halley comet, km

Units
km
UnitsConversion
1e3>m
Support
SupportQuantity
Positional