alerce_tap.lsst_ivo://x-unregistred/alerce_tap/multisurvey_lowercase/lsst_dia_objectALeRCE (Automatic Learning for the Rapid Classification of Events)ALeRCE Teamhttps://tap.alerce.online/favicon.png2026-04-11T22:13:50ZALeRCE Team

Beauchef 851, Edificio Norte, piso 6. Santiago, Chile.

alerce.broker@gmail.comastronomy, objectssurveystransientstime-series Summary catalog of transient and variable objects detected in LSST difference imaging. Contains aggregated photometric measurements across all bands (u, g, r, i, z, y), including PSF flux statistics, forced photometry fluxes, and temporal information for each detected DIA object.http://tap.alerce.online/tableinfo/alerce_tap.lsst_dia_objectalerce_tap Multi-survey astronomical object catalog containing astrometric and statistical information from multiple surveys. This table provides aggregated properties for astronomical objects including position, detection statistics, and temporal coverage.alerce_tap.lsst_dia_object Summary catalog of transient and variable objects detected in LSST difference imaging. Contains aggregated photometric measurements across all bands (u, g, r, i, z, y), including PSF flux statistics, forced photometry fluxes, and temporal information for each detected DIA object.oidUnique identifier of this DiaObjectmeta.id;srclongindexedprimaryvaliditystartmjdtaiProcessing time when validity of this diaObject starts, expressed as Modified Julian Date, International Atomic Timedtime.startdoubleraRight ascension coordinate of the position of the objectdegpos.eq.ra;meta.maindoubleindexedraerrUncertainty of radegstat.error;pos.eq.rafloatnullabledecDeclination coordinate of the position of the objectdegpos.eq.dec;meta.maindoubleindexeddecerrUncertainty of decdegstat.error;pos.eq.decfloatnullablera_dec_covCovariance between ra and decdeg**2stat.covariance;pos.eqfloatnullableu_psffluxmeanWeighted mean point-source model magnitude for u filterphot.flux;em.opt.U;stat.meanfloatnullableu_psffluxmeanerrStandard error of u_psfFluxMeanstat.error;phot.flux;em.opt.Ufloatnullableu_psffluxsigmaStandard deviation of the distribution of u_psfFluxstat.stdev;phot.flux;em.opt.Ufloatnullableu_psffluxndataThe number of u-band data pointsmeta.numberintnullableu_fpfluxmeanWeighted mean forced photometry flux for u filterphot.flux;em.opt.U;stat.meanfloatnullableu_fpfluxmeanerrStandard error of u_fpFluxMeanstat.error;phot.flux;em.opt.Ufloatnullableg_psffluxmeanWeighted mean point-source model magnitude for g filterphot.flux;em.opt.B;stat.meanfloatnullableg_psffluxmeanerrStandard error of g_psfFluxMeanstat.error;phot.flux;em.opt.Bfloatnullableg_psffluxsigmaStandard deviation of the distribution of g_psfFluxstat.stdev;phot.flux;em.opt.Bfloatnullableg_psffluxndataThe number of g-band data pointsmeta.numberintnullableg_fpfluxmeanWeighted mean forced photometry flux for g filterphot.flux;em.opt.B;stat.meanfloatnullableg_fpfluxmeanerrStandard error of g_fpFluxMeanstat.error;phot.flux;em.opt.Bfloatnullabler_psffluxmeanWeighted mean point-source model magnitude for r filterphot.flux;em.opt.R;stat.meanfloatnullabler_psffluxmeanerrStandard error of r_psfFluxMeanstat.error;phot.flux;em.opt.Rfloatnullabler_psffluxsigmaStandard deviation of the distribution of r_psfFluxstat.stdev;phot.flux;em.opt.Rfloatnullabler_psffluxndataThe number of r-band data pointsmeta.numberintnullabler_fpfluxmeanWeighted mean forced photometry flux for r filterphot.flux;em.opt.R;stat.meanfloatnullabler_fpfluxmeanerrStandard error of r_fpFluxMeanstat.error;phot.flux;em.opt.Rfloatnullablei_psffluxmeanWeighted mean point-source model magnitude for i filterphot.flux;em.opt.I;stat.meanfloatnullablei_psffluxmeanerrStandard error of i_psfFluxMeanstat.error;phot.flux;em.opt.Ifloatnullablei_psffluxsigmaStandard deviation of the distribution of i_psfFluxstat.stdev;phot.flux;em.opt.Ifloatnullablei_psffluxndataThe number of i-band data pointsmeta.numberintnullablei_fpfluxmeanWeighted mean forced photometry flux for i filterphot.flux;em.opt.I;stat.meanfloatnullablei_fpfluxmeanerrStandard error of i_fpFluxMeanstat.error;phot.flux;em.opt.Ifloatnullablez_psffluxmeanWeighted mean point-source model magnitude for z filterphot.flux;em.opt.I;stat.meanfloatnullablez_psffluxmeanerrStandard error of z_psfFluxMeanstat.error;phot.flux;em.opt.Ifloatnullablez_psffluxsigmaStandard deviation of the distribution of z_psfFluxstat.stdev;phot.flux;em.opt.Ifloatnullablez_psffluxndataThe number of z-band data pointsmeta.numberintnullablez_fpfluxmeanWeighted mean forced photometry flux for z filterphot.flux;em.opt.I;stat.meanfloatnullablez_fpfluxmeanerrStandard error of z_fpFluxMeanstat.error;phot.flux;em.opt.Ifloatnullabley_psffluxmeanWeighted mean point-source model magnitude for y filterphot.flux;em.IR.NIR;stat.meanfloatnullabley_psffluxmeanerrStandard error of y_psfFluxMeanstat.error;phot.flux;em.IR.NIRfloatnullabley_psffluxsigmaStandard deviation of the distribution of y_psfFluxstat.stdev;phot.flux;em.IR.NIRfloatnullabley_psffluxndataThe number of y-band data pointsmeta.numberintnullabley_fpfluxmeanWeighted mean forced photometry flux for y filterphot.flux;em.IR.NIR;stat.meanfloatnullabley_fpfluxmeanerrStandard error of y_fpFluxMeanstat.error;phot.flux;em.IR.NIRfloatnullableu_sciencefluxmeanWeighted mean forced photometry flux for u filterphot.flux;em.opt.U;stat.meanfloatnullableu_sciencefluxmeanerrStandard error of u_scienceFluxMeanstat.error;phot.flux;em.opt.Ufloatnullableg_sciencefluxmeanWeighted mean forced photometry flux for g filterphot.flux;em.opt.B;stat.meanfloatnullableg_sciencefluxmeanerrStandard error of g_scienceFluxMeanstat.error;phot.flux;em.opt.Bfloatnullabler_sciencefluxmeanWeighted mean forced photometry flux for r filterphot.flux;em.opt.R;stat.meanfloatnullabler_sciencefluxmeanerrStandard error of r_scienceFluxMeanstat.error;phot.flux;em.opt.Rfloatnullablei_sciencefluxmeanWeighted mean forced photometry flux for i filterphot.flux;em.opt.I;stat.meanfloatnullablei_sciencefluxmeanerrStandard error of i_scienceFluxMeanstat.error;phot.flux;em.opt.Ifloatnullablez_sciencefluxmeanWeighted mean forced photometry flux for z filterphot.flux;em.opt.I;stat.meanfloatnullablez_sciencefluxmeanerrStandard error of z_scienceFluxMeanstat.error;phot.flux;em.opt.Ifloatnullabley_sciencefluxmeanWeighted mean forced photometry flux for y filterphot.flux;em.IR.NIR;stat.meanfloatnullabley_sciencefluxmeanerrStandard error of y_scienceFluxMeanstat.error;phot.flux;em.IR.NIRfloatnullableu_psffluxminMinimum observed u band fluxesphot.flux;em.opt.U;stat.minfloatnullableu_psffluxmaxMaximum observed u band fluxesphot.flux;em.opt.U;stat.maxfloatnullableu_psffluxmaxslopeMaximum slope between u band flux obsevations max(delta_flux/delta_time)nJy/darith.rate;phot.flux;em.opt.U;stat.maxfloatnullableu_psffluxerrmeanMean of the u band flux errorsstat.error;phot.flux;em.opt.U;stat.meanfloatnullableg_psffluxminMinimum observed g band fluxesphot.flux;em.opt.B;stat.minfloatnullableg_psffluxmaxMaximum observed g band fluxesphot.flux;em.opt.B;stat.maxfloatnullableg_psffluxmaxslopeMaximum slope between g band flux obsevations max(delta_flux/delta_time)nJy/darith.rate;phot.flux;em.opt.B;stat.maxfloatnullableg_psffluxerrmeanMean of the g band flux errorsstat.error;phot.flux;em.opt.B;stat.meanfloatnullabler_psffluxminMinimum observed r band fluxesphot.flux;em.opt.R;stat.minfloatnullabler_psffluxmaxMaximum observed r band fluxesphot.flux;em.opt.R;stat.maxfloatnullabler_psffluxmaxslopeMaximum slope between r band flux obsevations max(delta_flux/delta_time)nJy/darith.rate;phot.flux;em.opt.R;stat.maxfloatnullabler_psffluxerrmeanMean of the r band flux errorsstat.error;phot.flux;em.opt.R;stat.meanfloatnullablei_psffluxminMinimum observed i band fluxesphot.flux;em.opt.I;stat.minfloatnullablei_psffluxmaxMaximum observed i band fluxesphot.flux;em.opt.I;stat.maxfloatnullablei_psffluxmaxslopeMaximum slope between i band flux obsevations max(delta_flux/delta_time)nJy/darith.rate;phot.flux;em.opt.I;stat.maxfloatnullablei_psffluxerrmeanMean of the i band flux errorsstat.error;phot.flux;em.opt.I;stat.meanfloatnullablez_psffluxminMinimum observed z band fluxesphot.flux;em.opt.I;stat.minfloatnullablez_psffluxmaxMaximum observed z band fluxesphot.flux;em.opt.I;stat.maxfloatnullablez_psffluxmaxslopeMaximum slope between z band flux obsevations max(delta_flux/delta_time)nJy/darith.rate;phot.flux;em.opt.I;stat.maxfloatnullablez_psffluxerrmeanMean of the z band flux errorsstat.error;phot.flux;em.opt.I;stat.meanfloatnullabley_psffluxminMinimum observed y band fluxesphot.flux;em.IR.NIR;stat.minfloatnullabley_psffluxmaxMaximum observed y band fluxesphot.flux;em.IR.NIR;stat.maxfloatnullabley_psffluxmaxslopeMaximum slope between y band flux obsevations max(delta_flux/delta_time)nJy/darith.rate;phot.flux;em.IR.NIR;stat.maxfloatnullabley_psffluxerrmeanMean of the y band flux errorsstat.error;phot.flux;em.IR.NIR;stat.meanfloatnullablefirstdiasourcemjdtaiFirst DIA source MJD in TAIdtime.startdoublenullablelastdiasourcemjdtaiLast DIA source MJD in TAIdtime.enddoublenullablendiasourcesNumber of DIA sourcesmeta.numberintcreated_dateDate record was createdtime.creationcharnullable