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Yohkoh Flare Catalogue(HXT/SXT/SXS/HXS)

ResourceID
spase://NASA/Catalog/YOHKOH/Flare

Description
This event list contains all solar flares recorded with Yohkoh HXT, SXT, SXS and HXS during the interval between October 1, 1991 and December 14, 2001. In the Yohkoh operation, the observation mode is automatically controlled by the onboard Data Processor, and intense flares trigger the so-called Flare mode. Weak flares, however, are recorded in the Quiet mode without triggering the Flare mode.

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Details

Version:2.7.1

Catalog

ResourceID
spase://NASA/Catalog/YOHKOH/Flare
ResourceHeader
ResourceName
Yohkoh Flare Catalogue(HXT/SXT/SXS/HXS)
ReleaseDate
2026-06-13 17:35:57
Description
This event list contains all solar flares recorded with Yohkoh HXT, SXT, SXS and HXS during the interval between October 1, 1991 and December 14, 2001. In the Yohkoh operation, the observation mode is automatically controlled by the onboard Data Processor, and intense flares trigger the so-called Flare mode. Weak flares, however, are recorded in the Quiet mode without triggering the Flare mode.
Contacts
Role Person StartDate StopDate Note
1. Author spase://SMWG/Person/Jun.Sato
2. Author spase://SMWG/Person/Kazuo.Yoshimura
3. MetadataContact spase://SMWG/Person/Olga.Y.Uritskaya

AccessInformation
RepositoryID
spase://SMWG/Repository/SDAC
AccessURL
URL
https://umbra.nascom.nasa.gov/yohkoh/HXT_catalog/image_html/all_images.html
Format
HTML
InstrumentIDs
spase://SMWG/Instrument/Yohkoh/HXT
spase://SMWG/Instrument/Yohkoh/SXT
spase://SMWG/Instrument/Yohkoh/WBS
PhenomenonType
SolarFlare
TimeSpan
StartDate
1991-10-01 14:24:30
StopDate
2001-12-14 20:46:01
Parameter #1
Name
EVENT
Support
SupportQuantity
Housekeeping
Parameter #2
Name
DATE
Support
SupportQuantity
Temporal
Parameter #3
Name
START
Support
SupportQuantity
Temporal
Parameter #4
Name
MAX
Support
SupportQuantity
Temporal
Parameter #5
Name
END
Support
SupportQuantity
Temporal
Parameter #6
Name
HXT-X
Description
Flare position from solar disk center in arcseconds; East-West.
Support
SupportQuantity
Positional
Parameter #7
Name
HXT-Y
Description
Flare position from solar disk center in arcseconds; North-South, with West and North positive, respectively.
Support
SupportQuantity
Positional
Parameter #8
Name
L
Description
L-band peak count rate in cts/s/SC (with background of ∼ 2 cts/s/SC)
Support
SupportQuantity
Other
Parameter #9
Name
M1
Description
M1-band peak count rate in cts/s/SC (with background of ∼ 1 cts/s/SC)
Support
SupportQuantity
Other
Parameter #10
Name
M2
Description
M2-band peak count rate in cts/s/SC (with background of ∼ 1 cts/s/SC)
Support
SupportQuantity
Other
Parameter #11
Name
H
Description
H-band peak count rate in cts/s/SC (with background of ∼ 9 cts/s/SC)
Support
SupportQuantity
Other
Parameter #12
Name
SXS21
Support
SupportQuantity
Other
Parameter #13
Name
SXS22
Support
SupportQuantity
Other
Parameter #14
Name
HXS1
Support
SupportQuantity
Other
Parameter #15
Name
HXS2
Support
SupportQuantity
Other
Parameter #16
Name
GOES
Description
GOES X-ray class
Support
SupportQuantity
Other
Parameter #17
Name
H
Description
H-alpha flare importance
Support
SupportQuantity
Other
Parameter #18
Name
H-alpha
Description
H-alpha flare location in solar coordinates
Support
SupportQuantity
Positional
Parameter #19
Name
NOAA
Description
NOAA active region number
Support
SupportQuantity
Other
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Last Updated: 2026-06-13