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Vega 2 Magnetic Field Data (0.1 s), Halley Comet

ResourceID
spase://NASA/NumericalData/Vega2/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 2 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:2.7.1

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/Vega2/MISCHA/FLYBY/PT0.1S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Vega 2 Magnetic Field Data (0.1 s), Halley Comet
ReleaseDate
2025-12-04 13:32:24Z
RevisionHistory
RevisionEvent
ReleaseDate
2020-07-07 21:15:50Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-12-04 13:32:24Z
Note
Added MetadataRightsList and RightsList(s). 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 product contains high-resolution (0.1 s) magnetic field data for intervals of the closest approach of the Vega 2 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/Vega2/MISCHA/FLYBY.PT0.1S
spase://VSPO/NumericalData/Vega2/MISCHA/FLYBY/PT0.1S
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/zzz_old/vega_data_from_nssdc/mag/
Description

FTP access to Vega mission data at NSSDC.

AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/zzz_old/vega_data_from_nssdc/mag/
Description

In CDF via HTTP from SPDF

Format
Text.ASCII
Encoding
ASCII
InstrumentIDs
spase://SMWG/Instrument/Vega2/MISCHA
MeasurementType
MagneticField
MeasurementType
Ephemeris
TemporalDescription
TimeSpan
StartDate
1986-03-09 04:12:37.1Z
StopDate
1986-03-09 08:40:07Z
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
SSE
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
SSE
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
SSE
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
SSE
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
SSE
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
SSE
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