HFC1ARivo://padc.obspm.helio/hfc1ar/q/epn_coreParis Astronomical Data CentreObservatoire de Paris - LESIA - PADC2026-05-18T02:30:16ZBASS2000

Observatoire de Paris PADC, 5 place Jules Jansen, 92195 Meudon, France

bass2000.contact@obspm.frsolar-physicsthe-sunsolar-active-regionscatalogsActive regions of the Sun from Heliophysics Feature Catalogue (HFC).http://voparis-tap-helio.obspm.fr/tableinfo/hfc1ar.epn_coreGeneralUniversityResearchAmateurIsServedByPADC TAP Server on voparis-tap-helio.obspm.fr TAP servicehttp://voparis-tap-helio.obspm.fr/taphfc1arDescription of active regions automatically detected from SOHO/MDI images using SMART code, and from SOHO/EIT and SDO/AIA images, using SPOCA-AR code. Detections are available from 1996 till now. In addition to active region description a chain code gives its contour.hfc1ar.epn_coreActive regions of the Sun from Heliophysics Feature Catalogue (HFC).ivo://ivoa.net/std/epntap#table-2.0granule_uidInternal table row index, which must be unique within the table. Can be alphanumeric.meta.idchargranule_gidCommon to granules of same type (e.g. same map projection, or geometry data products). Can be alphanumeric.meta.idcharobs_idAssociates granules derived from the same data (e.g. various representations/processing levels). Can be alphanumeric, may be the ID of original observation.meta.id;obschardataproduct_typeThe high-level organization of the data product, from a controlled vocabulary (e.g., 'im' for image, sp for spectrum). Multiple terms may be used, separated by # characters.meta.code.classcharnullabletarget_nameStandard IAU name of target (from a list related to target class), case sensitivemeta.id;srccharnullabletarget_classType of target, from a controlled vocabulary.src.classcharnullabletime_minAcquisition start time (in JD), as UTC at time_refpositiondtime.start;obsdoublenullabletime_maxAcquisition stop time (in JD), as UTC at time_refpositiondtime.end;obsdoublenullabletime_sampling_step_minSampling time for measurements of dynamical phenomena, lower limit.stime.resolution;stat.mindoublenullabletime_sampling_step_maxSampling time for measurements of dynamical phenomena, upper limitstime.resolution;stat.maxdoublenullabletime_exp_minIntegration time of the measurement, lower limit.stime.duration;obs.exposure;stat.mindoublenullabletime_exp_maxIntegration time of the measurement, upper limitstime.duration;obs.exposure;stat.maxdoublenullablespectral_range_minSpectral range (frequency), lower limit.Hzem.freq;stat.mindoublenullablespectral_range_maxSpectral range (frequency), upper limitHzem.freq;stat.maxdoublenullablespectral_sampling_step_minSpectral sampling step, lower limit.Hzem.freq;spect.binSize;stat.mindoublenullablespectral_sampling_step_maxSpectral sampling step, upper limitHzem.freq;spect.binSize;stat.maxdoublenullablespectral_resolution_minSpectral resolution, lower limit.spect.resolution;stat.mindoublenullablespectral_resolution_maxSpectral resolution, upper limitspect.resolution;stat.maxdoublenullablec1minLongitude on body, lower limit.degpos.bodyrc.lon;stat.mindoublenullablec1maxLongitude on body, upper limitdegpos.bodyrc.lon;stat.maxdoublenullablec2minLatitude on body, lower limit.degpos.bodyrc.lat;stat.mindoublenullablec2maxLatitude on body, upper limitdegpos.bodyrc.lat;stat.maxdoublenullablec3minAltitude from reference surface, lower limit.kmpos.bodyrc.alt;stat.mindoublenullablec3maxAltitude from reference surface, upper limitkmpos.bodyrc.alt;stat.maxdoublenullables_regionObsCore-like footprint, valid for celestial, spherical, or body-fixed framespos.outline;obs.fieldcharnullablec1_resol_minResolution in the first coordinate, lower limit.degpos.angResolution;stat.mindoublenullablec1_resol_maxResolution in the first coordinate, upper limitdegpos.angResolution;stat.maxdoublenullablec2_resol_minResolution in the second coordinate, lower limit.degpos.angResolution;stat.mindoublenullablec2_resol_maxResolution in the second coordinate, upper limitdegpos.angResolution;stat.maxdoublenullablec3_resol_minResolution in the third coordinate, lower limit.kmpos.resolution;stat.mindoublenullablec3_resol_maxResolution in the third coordinate, upper limitkmpos.resolution;stat.maxdoublenullablespatial_frame_typeFlavor of coordinate system, defines the nature of coordinates. From a controlled vocabulary, where 'none' means undefined.meta.code.class;pos.framecharnullableincidence_minIncidence angle (solar zenithal angle) during data acquisition, lower limit.degpos.incidenceAng;stat.mindoublenullableincidence_maxIncidence angle (solar zenithal angle) during data acquisition, upper limitdegpos.incidenceAng;stat.maxdoublenullableemergence_minEmergence angle during data acquisition, lower limit.degpos.emergenceAng;stat.mindoublenullableemergence_maxEmergence angle during data acquisition, upper limitdegpos.emergenceAng;stat.maxdoublenullablephase_minPhase angle during data acquisition, lower limit.degpos.phaseAng;stat.mindoublenullablephase_maxPhase angle during data acquisition, upper limitdegpos.phaseAng;stat.maxdoublenullableinstrument_host_nameStandard name of the observatory or spacecraftmeta.id;instr.obstycharnullableinstrument_nameStandard name of instrumentmeta.id;instrcharnullablemeasurement_typeUCD(s) defining the data, with multiple entries separated by hash (#) characters.meta.ucdcharnullableprocessing_levelDataset-related encoding, or simplified CODMAC calibration levelmeta.calibLevelintcreation_dateDate of first entry of this granuletime.creationcharnullablemodification_dateDate of last modification (used to handle mirroring)time.processingcharnullablerelease_dateStart of public periodtime.releasecharnullableservice_titleTitle of resource (an acronym really, will be used to handle multiservice results)meta.titlecharnullableaccess_formatFile format type (RFC 6838 Media Type a.k.a. MIME type)meta.code.mimecharnullableaccess_urlURL of the data file, case sensitive. If present, then access_format and access_estsize are mandatory.meta.ref.url;meta.filecharnullablethumbnail_urlURL of a thumbnail image with predefined size (png ~200 pix, for use in a client only)meta.ref.url;meta.previewcharnullablefeature_nameSecondary name (can be standard name of region of interest)meta.id;src;obs.fieldcharnullablebib_referenceBibcode or DOI preferred if available, or other bibliographic identifier or URLmeta.bibcharnullablespatial_originDefines the frame originmeta.ref;pos.framecharnullabletime_refpositionDefines where the time is measured (e.g., ground vs. spacecraft). Defaults to the observer's framemeta.ref;time.scalecharnullabletime_scaleDefaults to UTC in data services; takes values from http://www.ivoa.net/rdf/time_scale otherwisetime.scalecharnullablefile_nameName of the data file only, case sensitivemeta.id;meta.filecharnullablepublisherA short string identifying the entity running the data service usedmeta.curationcharnullablespatial_coordinate_descriptionID of specific coordinate system and version or properties.meta.code.class;pos.framecharnullablecodeName of the feature recognition codemeta.code;meta.softwarefeature_recognision_code.code_name,preprocessing_code.code_namecharnullableversionVersion of the feature recognition codemeta.versionfeature_recognision_code.version,preprocessing_code.versioncharnullableenc_metEncoding method (raster, chain code, none...)meta.codefeature_recognision_code.encodingcharnullableobsinst_keyHELIO ICS keyword of the observatory-instrumentmeta.id.crosscharnullablec_rotationCarrington rotationmeta.number;time.period.rotationobservation.carrington_rotationinturlURL of the original filemeta.ref.urlobservation.url_orig_file,image.org_imagecharnullablecdelt1Scale of the original observation along X axispos.wcs.scale;obs.image;meta.fitsimage.spacial_scale,image.spacial_scale.spatial_scale_x_arcsecdoublenullablecdelt2Scale of the original observation along Y axispos.wcs.scale;obs.image;meta.fitsimage.spacial_scale,image.spacial_scale.spatial_scale_y_arcsecdoublenullablenaxis1First dimension of the original image (X)pos.wcs.naxis;obs.image;meta.fitsimage.naxis_xintnaxis2Second dimension of the original image (Y)pos.wcs.naxis;obs.image;meta.fitsimage.naxis_yintcenter_xReference pixel coordinate along X axispos.wcs.crpix;pos.cartesian.ximage.centre_sun.x_pixdoublenullablecenter_yReference pixel coordinate along Y axispos.wcs.crpix;pos.cartesian.yimage.centre_sun.y_pixdoublenullabler_sunRadius of the Sun in pixelsphys.size.radius;obs.imageimage.radius_sun_pixdoublenullableqclk_urlURL of the quicklook image directorymeta.ref.urlobservation.url_quick_look_filecharnullableqclk_fnameName of the quicklook image filemeta.id;meta.fileobservation.quick_look_file_namecharnullableid_armeta.idar.idintindexedprimarynoaa_numberNOAA region numbermeta.idar.noaa_solar_region_idintnullablefeat_x_pixX image coordinates of the AR gravity centre in pixelspos.wcs;pos.barycenter;pos.cartesian.xfeature.centre.x_pixintfeat_y_pixY image coordinates of the AR gravity centre in pixelspos.wcs;pos.barycenter;pos.cartesian.yfeature.centre.y_pixintfeat_carr_long_degCarrington longitude of the AR gravity centre in degreespos.bodyrc.lon;pos.bodygraphic;pos.barycenterfeature.centre.long_carrfloatnullablefeat_carr_lat_degCarrington latitude of the AR gravity centre in degreespos.bodyrc.lat;pos.bodygraphic;pos.barycenterfeature.centre.lat_carrfloatnullablebr_x0_pixBounding rectangle heliocentric coordinate South East most point in pixelspos.cartesian.x;obs.image;stat.minfeature.br.coord_image.x_pixintbr_y0_pixBounding rectangle heliocentric coordinate South East most point in pixelspos.cartesian.y;obs.image;stat.minfeature.br.coord_image.y_pixintbr_x1_pixBounding rectangle heliocentric coordinate North East most point in pixelspos.cartesian.x;obs.image;stat.minfeature.br.coord_image.x_pixintnullablebr_y1_pixBounding rectangle heliocentric coordinate North East most point in pixelspos.cartesian.y;obs.image;stat.maxfeature.br.coord_image.y_pixintnullablebr_x2_pixBounding rectangle heliocentric coordinate South West most point in pixelspos.cartesian.x;obs.image;stat.maxfeature.br.coord_image.x_pixintnullablebr_y2_pixBounding rectangle heliocentric coordinate South West most point in pixelspos.cartesian.y;obs.image;stat.minfeature.br.coord_image.y_pixintnullablebr_x3_pixBounding rectangle heliocentric coordinate North West most point in pixelspos.cartesian.x;obs.image;stat.maxfeature.br.coord_image.x_pixintbr_y3_pixBounding rectangle heliocentric coordinate North West most point in pixelspos.cartesian.y;obs.image;stat.maxfeature.br.coord_image.y_pixintfeat_area_pixNumber of pixels included in the featuremeta.number;phys.areafeature.area.area_number_pixelintfeat_area_deg2Area of the feature in square degreesphys.areafeature.area.area_deg_sqfloatnullablefeat_area_mm2Area in Mm2 of the ARphys.areafeature.area.area_Mm_sqfloatnullablefeat_max_intAR max. intensity value, in units of the original observationphot.flux.density;stat.maxfeature.max_intensityfloatnullablefeat_min_intAR min. intensity value, in units of the original observationphot.flux.density;stat.minfeature.min_intensityfloatnullablefeat_mean_intAR mean intensity value in the units of the original observationphot.flux.density;stat.meanfeature.mean_intensityfloatnullablefeat_mean2qsunMean of the AR to QS instensity ratiophot.flux.density;arith.ratio;stat.meanfeature.mean_intensity_2quiet_sundoublenullablefeat_min_bzAR min. line-of-sight magnetic field value, in Gaussphys.magField;stat.minfeature.min_bz.bz_magnetic_field_gaussfloatnullablefeat_max_bzAR max. line-of-sight magnetic field value, in Gaussphys.magField;stat.maxfeature.max_bz.bz_magnetic_field_gaussfloatnullablefeat_mean_bzAR mean line-of-sight magnetic field value in Gaussphys.magField;stat.meanfeature.mean_bz.bz_magnetic_field_gaussfloatnullablefeat_mean_gradMean of the horizontal gradient polarity separation line (G/Mm)arith.grad;phys.magField;stat.meanar.mean_gradientfloatnullablefeat_median_gradMedian of the horizontal gradient polarity separation line (G/Mm)arith.grad;phys.magField;stat.medianar.median_gradientfloatnullablefeat_max_gradMaximum of the horizontal gradient polarity separation line (G/Mm)arith.grad;phys.magField;stat.maxar.max_gradientfloatnullablefeat_length_nlAR length of the neutral line in Mmphys.sizear.neutral_line_length_Mmfloatnullablefeat_length_sgAR length of the strong gradient of nl above 50G/Mmarith.grad;phys.sizear.strong_gradient_lengthfloatnullablecc_x_pixX coordinate of chain code start position in pixelspos.cartesian.x;obs.image;src.morphfeature.chain_code.start_pos.x_pixintcc_y_pixY coordinate of chain code start position in pixelspos.cartesian.y;obs.image;src.morphfeature.chain_code.start_pos.y_pixintccBoundary chain codemeta.code;src.morphfeature.chain_code.cccharnullablecc_lengthLength of the chain codemeta.number;src.morphfeature.chain_code.lengthinttrack_idIndex of the feature during a rotationmeta.idar_tracking.tracking_id,ch_tracking.previous_tracking_id,filament_tracking.tracking_id,,,intnullablephenomNumber referring to the behaviour of the featuremeta.code.classar_tracking.behaviour_code,ch_tracking.behaviour_code,filament_tracking.behaviour_code,,,intnullableref_featFeature on which the phenomen appliesmeta.id.crossar_tracking.previous_tracking_id,ch_tracking.previous_tracking_id,filament_tracking.previous_tracking_id,,,intnullabletrack_lvl_trustPercentage of confidence of the trackingintnullablecoverageintroduces an ascii (ST)MOC, v2 (2D footprint on celestial, spherical, or body-related frames, possibly including time)pos.outline;obs.fieldcharnullable