occ_test.epn_corivo://padc.obspm.sandbox/occ_test/q/epn_coreParis Astronomical Data Centre - LIRAObservatoire de Paris - LIRA2026-06-26T09:36:42ZVESPA Data Service

Observatoire de Paris VOPDC, 5 place Jules Janssen, 92195 Meudon, France

vo.paris@obspm.frsolar-system-astronomyplanetary-scienceasteroidstrans-neptunian-objectsoccultationasteroid-occultationEPN-TAP table for stellar occultation results (OccDM prototype)http://voparis-tap-sandbox.obspm.fr/tableinfo/occ_test.epn_coreCatalogResearchIsServedByPADC TAP Server on voparis-tap-sandbox.obspm.fr TAP servicehttp://voparis-tap-sandbox.obspm.fr/tapocc_test Prototype VESPA service demonstrating the OccDM data model as an EPN-TAP 2.0 extension for stellar occultation results. Covers four events observed between 2017 and 2022: Triton (2017, 2008, 1997, 1989), Quaoar (2022), Varda (2018), and Neptune (NOC21, 2021). Each granule is either an event (derived physical parameters: size, shape, albedo, rings, atmosphere) or a chord (individual station timing and geometry). Source papers: Marques Oliveira et al. 2022, Morgado et al. 2023, Souami et al. 2020, and Rapport de stage M2-12 (NOC21).ivo://vopdc.obspm/std/EpnCore#schema-2.0occ_test.epn_coreEPN-TAP table for stellar occultation results (OccDM prototype)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.maxdoublenullablec1minRight Ascension (ICRS), lower limit.degpos.eq.ra;stat.mindoublenullablec1maxRight Ascension (ICRS), upper limitdegpos.eq.ra;stat.maxdoublenullablec2minDeclination (ICRS), lower limit.degpos.eq.dec;stat.mindoublenullablec2maxDeclination (ICRS), upper limitdegpos.eq.dec;stat.maxdoublenullablec3minDistance from coordinate origin, lower limit.AUpos.distance;stat.mindoublenullablec3maxDistance from coordinate origin, upper limitAUpos.distance;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.AUpos.resolution;stat.mindoublenullablec3_resol_maxResolution in the third coordinate, upper limitAUpos.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 access periodtime.releasecharnullableservice_titleTitle of resource (an acronym really, will be used to handle multiservice results)meta.titlecharnullableaccess_urlURL of the data file, case sensitive. If present, then access_format and access_estsize are mandatory.meta.ref.url;meta.filecharnullableaccess_formatFile format type (RFC 6838 Media Type a.k.a. MIME type)meta.code.mimecharnullableaccess_estsizeEstimated file size in kbyte.kbytephys.size;meta.fileintnullablefile_nameName of the data file only, case sensitivemeta.id;meta.filecharnullablethumbnail_urlURL of a thumbnail image with predefined size (png ~200 pix, for use in a client only)meta.ref.url;meta.previewcharnullablebib_referenceBibcode or DOI preferred if available, or other bibliographic identifier or URLmeta.bibcharnullablepublisherA short string identifying the entity running the data service usedmeta.curationcharnullablealt_target_nameProvides alternative target name if more common (e.g. comets); multiple identifiers can be separated by hashesmeta.id;srccharnullabletarget_regionType of region or feature of interestmeta.id;src;obs.fieldcharnullablefeature_nameSecondary name (can be standard name of region of interest)meta.id;src;obs.fieldcharnullableexternal_linkWeb page providing more details on this granulemeta.ref.urlcharnullableearth_distance_minMin Earth-target distanceAUpos.distance;stat.mindoublenullableearth_distance_maxMax Earth-target distanceAUpos.distance;stat.maxdoublenullableraRight ascensiondegpos.eq.ra;meta.maindoublenullabledecDeclinationdegpos.eq.dec;meta.maindoublenullablediameterTarget diameter, or equivalent diameter for binary objectskmphys.size.diameterdoublenullablealbedoTarget albedophys.albedodoublenullablesemi_major_axisAUphys.size.smajAxisdoublenullableeccentricityOrbit eccentricitysrc.orbital.eccentricitydoublenullableinclinationOrbit inclinationdegsrc.orbital.inclinationdoublenullableepochEpoch of interestdtime.epochdoublenullablemagnitudeAbsolute magnitude. For small bodies, from HG magnitude systemmagphys.magAbsdoublenullabledynamical_classClass of small body, from a controlled vocabulary (see the EPN-TAP specification)meta.code.class;srccharnullabledynamical_typeSubdivision of the dynamical class, from a controlled vocabularymeta.code.class;srccharnullableevent_typeType of event from a controlled vocabulary (meteor_shower, fireball, lunar_flash, comet_tail_crossing...)meta.code.classcharnullableevent_statusOne of prediction, observation, or utilitymeta.code.statuscharnullablemessengerVector of measured signal, including electromagnetic band, from http://www.ivoa.net/rdf/messengerinstr.bandpasscharnullablefilterIdentifies filter in use, typically for imagesmeta.id;instr.filtercharnullableinternal_referenceRelated granule_uid(s) in the current service; hash-separatedmeta.id.crosscharnullabledatalink_urlLink to a datalink document for this datasetmeta.ref.urlcharnullablecoverage(ST)MOC footprint, valid for celestial, spherical, or body-fixed frames + time coveragepos.outline;obs.fieldcharnullableobserver_nameObserver namemeta.id.PI;obs.observercharnullableobserver_lonObserver's approximate longitudeobs.observer;pos.earth.londoublenullableobserver_latObserver's approximate latitudeobs.observer;pos.earth.latdoublenullableobserver_locationBroad, free-text location and geographic position of the observer or telescope. Can be used when the exact location cannot be releasedpos;obs.observercharnullablediameter_errorUncertainty on equivalent diameterkmstat.error;phys.size.diameterfloatnullablealbedo_errorUncertainty on geometric albedo pVstat.error;phys.albedofloatnullableobserver_altitudeObserver altitude above WGS84 ellipsoid (m)mpos.bodyrc.altfloatnullableocc_shadow_velocityShadow velocity at closest approachkm/sphys.velocfloatnullableocc_shadow_paPosition angle of shadow motion (N→E)degpos.posAngfloatnullableocc_closest_approachPredicted geocentric closest approach body–stararcsecpos.angDistancefloatnullableocc_ellipse_aApparent semi-major axis of fitted ellipsekmphys.size.smajAxisfloatnullableocc_ellipse_a_errorUncertainty on semi-major axiskmstat.error;phys.size.smajAxisfloatnullableocc_ellipse_bApparent semi-minor axis of fitted ellipsekmphys.size.sminAxisfloatnullableocc_ellipse_b_errorUncertainty on semi-minor axiskmstat.error;phys.size.sminAxisfloatnullableocc_ellipse_paPosition angle of fitted ellipse (E of N)degpos.posAngfloatnullableocc_ellipse_pa_errorUncertainty on ellipse position angledegstat.error;pos.posAngfloatnullableocc_oblatenessApparent oblateness (a-b)/aphys.paramfloatnullableocc_oblateness_errorUncertainty on apparent oblatenessstat.error;phys.paramfloatnullableocc_bulk_densityBulk density of the system (g/cm³)g/cm**3phys.densityfloatnullableocc_bulk_density_errorUncertainty on bulk density (g/cm³)g/cm**3stat.error;phys.densityfloatnullableocc_nb_chords_positiveNumber of positive detections (body occulted)meta.number;obsintnullableocc_nb_chords_negativeNumber of negative detections (body not occulted)meta.number;obsintnullableocc_nb_chords_grazingNumber of grazing detectionsmeta.number;obsintnullableocc_star_idOcculted star catalogue identifiermeta.id;srccharnullableocc_star_catalogueSource catalogue (GaiaDR3, GaiaDR2, etc.)meta.idcharnullableocc_star_mag_gGaia G magnitude of occulted starmagphot.mag;em.optfloatnullableocc_star_mag_bpGaia BP magnitudemagphot.mag;em.opt.Bfloatnullableocc_star_mag_rpGaia RP magnitudemagphot.mag;em.opt.Rfloatnullableocc_star_mag_j2MASS J magnitudemagphot.mag;em.IR.Jfloatnullableocc_star_mag_h2MASS H magnitudemagphot.mag;em.IR.Hfloatnullableocc_star_mag_k2MASS K magnitudemagphot.mag;em.IR.Kfloatnullableocc_star_ruweGaia RUWE (>1.4 indicates non-single)stat.fit.goodnessfloatnullableocc_star_multiplicityStellar multiplicity: single/binary/suspected/multiple/unknownmeta.codecharnullableocc_star_angular_diameterEstimated angular diameter of occulted starmasphys.angSize;srcfloatnullableocc_detected_ringsRing feature detected in this event: yes/no/suspectedmeta.codecharnullableocc_detected_atmosphereAtmosphere detected in this event: yes/no/suspectedmeta.codecharnullableocc_detected_satelliteSatellite detected in this event: yes/nometa.codecharnullableocc_detected_central_flashCentral flash detected in this event: yes/nometa.codecharnullableocc_ring_nameRing designation (Q1R, Q2R, etc.)meta.idcharnullableocc_ring_radiusMean orbital radius of ringkmphys.size.radiusfloatnullableocc_ring_radius_errorUncertainty on ring orbital radiuskmstat.error;phys.size.radiusfloatnullableocc_ring_widthRadial width of ringkmphys.sizefloatnullableocc_ring_width_errorUncertainty on ring widthkmstat.error;phys.sizefloatnullableocc_ring_optical_depthNormal optical depth of ringphys.absorption.opticalDepthfloatnullableocc_ring_optical_depth_errorUncertainty on normal optical depthstat.error;phys.absorption.opticalDepthfloatnullableocc_surface_pressureEstimated surface pressure (µbar)ubarphys.pressurefloatnullableocc_surface_pressure_error_minLower uncertainty on surface pressureubarstat.error;stat.min;phys.pressurefloatnullableocc_surface_pressure_error_maxUpper uncertainty on surface pressureubarstat.error;stat.max;phys.pressurefloatnullableocc_chord_idUnique chord identifiermeta.idcharnullableocc_chord_statusChord detection status: positive (body occulted), negative (no occultation), grazing (partial), NDR (no data recorded — observer present but acquisition failed)meta.codecharnullableocc_ingress_timeIngress time (JD UTC)dtime.startdoublenullableocc_ingress_time_errorUncertainty on ingress time (s)sstat.error;time.startfloatnullableocc_egress_timeEgress time (JD UTC)dtime.enddoublenullableocc_egress_time_errorUncertainty on egress time (s)sstat.error;time.endfloatnullableocc_chord_lengthPhysical chord lengthkmphys.sizefloatnullableocc_telescope_apertureTelescope aperture diameter (m)minstr.paramfloatnullableocc_snrSignal-to-noise ratio per data pointstat.snrfloatnullableocc_timing_sourceTiming reference: GPS/NTP/manual/unknownmeta.codecharnullableocc_acquisition_modeAcquisition mode: cube/continuous/othermeta.code;instr.setupcharnullableocc_ephemeris_sourceEphemeris used for prediction (NIMAv16, JPL Horizons, etc.)meta.refcharnullableocc_fit_methodFitting method (chi2_SORA, chi2, MCMC, etc.)meta.codecharnullable