alerce_tap.ztf_pivo://x-unregistred/alerce_tap/multisurvey_lowercase/ztf_ps1ALeRCE (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 Cross-match of ZTF detections to Pan-STARRS1 catalog sources within 30 arcsec, including up to three closest matches with multi-band PSF photometry (g, r, i, z), star/galaxy scores, and angular separations.http://tap.alerce.online/tableinfo/alerce_tap.ztf_ps1alerce_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.ztf_ps1 Cross-match of ZTF detections to Pan-STARRS1 catalog sources within 30 arcsec, including up to three closest matches with multi-band PSF photometry (g, r, i, z), star/galaxy scores, and angular separations.oidUnique identifier for this objectmeta.id;srclongindexedprimarymeasurement_idUnique identifier for the subtraction candidatemeta.idlongindexedprimaryobjectidps1Object ID of closest source from PS1 catalog, if exists within 30 arcsecmeta.id.crosslongnullablesgmag1g-band PSF magnitude of closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Bfloatnullablesrmag1r-band PSF magnitude of closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Rfloatnullablesimag1i-band PSF magnitude of closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Ifloatnullableszmag1z-band PSF magnitude of closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Ifloatnullablesgscore1Star/Galaxy score of closest source from PS1 catalog, 0 <= sgscore <= 1 where closer to 1 implies higher likelihood of being a starsrc.class.starGalaxyfloatnullabledistpsnr1Distance of closest source from PS1 catalog, if exists within 30 arcsecarcsecpos.angDistancefloatnullableobjectidps2Object ID of second closest source from PS1 catalog, if exists within 30 arcsecmeta.id.crosslongnullablesgmag2g-band PSF magnitude of second closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Bfloatnullablesrmag2r-band PSF magnitude of second closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Rfloatnullablesimag2i-band PSF magnitude of second closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Ifloatnullableszmag2z-band PSF magnitude of second closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Ifloatnullablesgscore2Star/Galaxy score of second closest source from PS1 catalog, if exists within 30 arcsec: 0 <= sgscore <= 1 where closer to 1 implies higher likelihood of being a starsrc.class.starGalaxyfloatnullabledistpsnr2Distance to second closest source from PS1 catalog, if exists within 30 arcsecarcsecpos.angDistancefloatnullableobjectidps3Object ID of third closest source from PS1 catalog, if exists within 30 arcsecmeta.id.crosslongnullablesgmag3g-band PSF magnitude of third closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Bfloatnullablesrmag3r-band PSF magnitude of third closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Rfloatnullablesimag3i-band PSF magnitude of third closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Ifloatnullableszmag3z-band PSF magnitude of third closest source from PS1 catalog, if exists within 30 arcsecmagphot.mag;em.opt.Ifloatnullablesgscore3Star/Galaxy score of third closest source from PS1 catalog, if exists within 30 arcsec: 0 <= sgscore <= 1 where closer to 1 implies higher likelihood of being a starsrc.class.starGalaxyfloatnullabledistpsnr3Distance to third closest source from PS1 catalog, if exists within 30 arcsecarcsecpos.angDistancefloatnullablenmtchpsNumber of source matches from PS1 catalog falling within 30 arcsecmeta.numberintnullablecreated_dateDate record was createdtime.creationcharnullable