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Data Access
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Vega 2 Magnetic Field Data (2.5 min)
var authors='Verigin, Mikhail I.';
document.write(authors);
(2026).
Vega 2 Magnetic Field Data (2.5 min).
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/8zwe-0190. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/Vega2/MISCHA/PT2M30S
Description
2.5-minute averaged magnetic field measurements from Vega 2. During the cruise phase from Earth to Venus (12/84-06/85) both Vega-1 and Vega-2 spacecraft had one-axis orientation, i.e. the spacecraft X axis was maintained sunward-pointing, while the spacecraft Y and Z axes rotated about the X axis. The spin phase of this rotation was not known, therefore the directions of By and Bz components are unknown. Magnetometer data for this period are presented in spacecraft coordinates as Br (directed radially from spacecraft to the Sun), Bysc, Bzsc. From the providers: "It is proposed to use for analysis of the interplanetary magnetic field during this period the Br component and the total B=sqrt(Bxsc^2+Bysc^2+Bzsc^2). Bysc and Bzsc components are included in the data, but keep in mind that the orientation of these axes is unknown. It can be considered as fixed during periods up to a few hours, so the data can be used to look for IMF discontinues and IMF orientation variations." After Venus flybys (June, 11-15, 1985) up to Comet Halley (March, 6 and 9, 1986) and sometimes later Vega-1 and Vega-2 had three-axis stabilized orientations. After-Venus magnetic field data are presented in spacecraft-centered solar ecliptic (SE) coordinate system as Br, Bzse, Byse, B, where Br is directed from the spacecraft to the Sun, Bzse is directed along Bz axes of the Solar Ecliptic system (to ecliptic pole), Byse completes the right handed set and B=sqrt(Br^2+By^2+Bz^2).
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.
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Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/Vega2/MISCHA/PT2M30S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Vega 2 Magnetic Field Data (2.5 min)
DOI
https://doi.org/10.48322/8zwe-0190
ReleaseDate
2026-07-21 12:08:39Z
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
RevisionEvent
ReleaseDate
2026-04-10 09:59:14Z
Note
Added new Contact(s). ZCB
RevisionEvent
ReleaseDate
2026-04-10 10:04:05Z
Note
Added PublicationInfo. ZCB
RevisionEvent
ReleaseDate
2026-06-11 14:42:40Z
Note
Added DOI. tlk
RevisionEvent
ReleaseDate
2026-07-21 12:08:39Z
Note
Added HelioData InformationURL. JWL
Description
2.5-minute averaged magnetic field measurements from Vega 2. During the cruise phase from Earth to Venus (12/84-06/85) both Vega-1 and Vega-2 spacecraft had one-axis orientation, i.e. the spacecraft X axis was maintained sunward-pointing, while the spacecraft Y and Z axes rotated about the X axis. The spin phase of this rotation was not known, therefore the directions of By and Bz components are unknown. Magnetometer data for this period are presented in spacecraft coordinates as Br (directed radially from spacecraft to the Sun), Bysc, Bzsc. From the providers: "It is proposed to use for analysis of the interplanetary magnetic field during this period the Br component and the total B=sqrt(Bxsc^2+Bysc^2+Bzsc^2). Bysc and Bzsc components are included in the data, but keep in mind that the orientation of these axes is unknown. It can be considered as fixed during periods up to a few hours, so the data can be used to look for IMF discontinues and IMF orientation variations." After Venus flybys (June, 11-15, 1985) up to Comet Halley (March, 6 and 9, 1986) and sometimes later Vega-1 and Vega-2 had three-axis stabilized orientations. After-Venus magnetic field data are presented in spacecraft-centered solar ecliptic (SE) coordinate system as Br, Bzse, Byse, B, where Br is directed from the spacecraft to the Sun, Bzse is directed along Bz axes of the Solar Ecliptic system (to ecliptic pole), Byse completes the right handed set and B=sqrt(Br^2+By^2+Bz^2).
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.
PublicationInfo
Authors
Verigin, Mikhail I.
PublicationDate
2026-04-10 10:04:05Z
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
CoPI
spase://SMWG/Person/Mikhail.I.Verigin
2.
GeneralContact
spase://SMWG/Person/Valery.G.Petrov
3.
DataProducer
spase://SMWG/Person/Valery.A.Styazhkin
4.
TechnicalContact
spase://SMWG/Person/Natalia.E.Papitashvili
5.
MetadataContact
spase://SMWG/Person/Jan.Merka
InformationURL
Name
HelioData
URL
https://helio.data.nasa.gov/dataset/Vega2_MISCHA_PT2M30S
Description
The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more.
PriorIDs
spase://VHO/NumericalData/Vega2/MISCHA/PT2M30S
spase://VSPO/NumericalData/Vega2/MISCHA/PT2M30S
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
1985-01-01 00:02:16Z
StopDate
1986-03-13 23:57:53Z
Cadence
PT2M30S
ObservedRegion
Heliosphere.Inner
ObservedRegion
Comet
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
Br
ParameterKey
Column 7
Description
Magnetic field radial (+ to Sun) component
Caveats
Magnetic field data are presented in spacecraft coordinates (SC) (before the Venus flyby) or in spacecraft-centered solar ecliptic (SE) coordinate system (after the Venus flyby). In both cases the Br(=Bx) component points towards Sun. See also the CSflag parameter.
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SSE
FillValue
9999.9
Field
Qualifier
Component.I
Qualifier
Average
FieldQuantity
Magnetic
Parameter #8
Name
By
ParameterKey
Column 8
Description
Magnetic field By component
Caveats
During the cruise phase from Earth to Venus (12/84-06/85) both Vega-1 and Vega-2 spacecraft had one-axis orientation, i.e. the spacecraft X axis was maintained sunward-pointing, while the spacecraft Y and Z axes rotated about the X axis. The spin phase of this rotation was not known, therefore the directions of By and Bz components are unknown. After-Venus magnetic field data are presented in spacecraft-centered solar ecliptic (SE) coordinate system as Br, Bzse, Byse, B, where Br is directed from the spacecraft to the Sun, Bzse is directed along Bz axes of the Solar Ecliptic system (to ecliptic pole), Byse completes the right handed set and B=sqrt(Br^2+By^2+Bz^2). See also the CSflag parameter.
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SSE
FillValue
9999.9
Field
Qualifier
Component.J
Qualifier
Average
FieldQuantity
Magnetic
Parameter #9
Name
Bz
ParameterKey
Column 9
Description
Magnetic field Bz component
Caveats
During the cruise phase from Earth to Venus (12/84-06/85) both Vega-1 and Vega-2 spacecraft had one-axis orientation, i.e. the spacecraft X axis was maintained sunward-pointing, while the spacecraft Y and Z axes rotated about the X axis. The spin phase of this rotation was not known, therefore the directions of By and Bz components are unknown. After-Venus magnetic field data are presented in spacecraft-centered solar ecliptic (SE) coordinate system as Br, Bzse, Byse, B, where Br is directed from the spacecraft to the Sun, Bzse is directed along Bz axes of the Solar Ecliptic system (to ecliptic pole), Byse completes the right handed set and B=sqrt(Br^2+By^2+Bz^2). See also the CSflag parameter.
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SSE
FillValue
9999.9
Field
Qualifier
Component.K
Qualifier
Average
FieldQuantity
Magnetic
Parameter #10
Name
B
ParameterKey
Column 10
Description
Magnetic field magnitude in nT
Units
nT
UnitsConversion
1e-9>T
FillValue
9999.9
Field
Qualifier
Magnitude
Qualifier
Average
FieldQuantity
Magnetic
Parameter #11
Name
R
ParameterKey
Column 11
Description
Spacecraft radial distance from Sun in AU.
Units
AU
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HGI
Support
Qualifier
Magnitude
SupportQuantity
Positional
Parameter #12
Name
Azimuth
ParameterKey
Column 12
Description
HGI spacecraft position azimuth, degrees.
Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HGI
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #13
Name
Elevation
ParameterKey
Column 13
Description
HGI Spacecraft position elevation, degrees.
Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HGI
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #14
Name
CSflag
ParameterKey
Column 14
Description
Coordinate system flag for magnetic field data. +-------------------------------------+ Flag Coordinate system -------------------------------------- 0 Spacecraft coordinates 1 Solar Ecliptic coordinates +-------------------------------------+
ValidMin
0
ValidMax
1
Support
SupportQuantity
Other