Table information for 'ztf.xmatch'

General

Table Description:

Cross-matches between ZTF objects and external astronomical catalogs, including angular separation, catalog identifiers, and classification information.

This table is available for ADQL queries and through the TAP endpoint.

Resource Description:

Legacy ZTF astronomical catalog containing objects, detections, photometric measurements, classifications, and cross-matches from the Zwicky Transient Facility (ZTF) survey, as processed by the ALeRCE broker pipeline.

For a list of all services and tables belonging to this table's resource, see Information on resource 'ALeRCE ZTF Legacy Catalog'

Citing this table

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:ztf_xmatch,
  year=2026,
  title={{ZTF} Cross-Catalog Matches},
  author={{ALeRCE} Team},
  url={http://tap.alerce.online/tableinfo/ztf.xmatch},
  howpublished={{VO} resource provided by the {ALeRCE} {TAP} service}
}

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
oid Oid ZTF object identifier N/A meta.id;src
catid Catid External catalog short identifier N/A meta.id;meta.table
oid_catalog Oid_catalog Source identifier in the external catalog N/A meta.id
dist Dist Angular separation to the matched catalog source arcsec pos.angDistance
class_catalog Class_catalog Classification from the external catalog (if available) N/A src.class
period Period Period from the external catalog (if applicable) d time.period

Columns that are parts of indices are marked like this.

VOResource

VO nerds may sometimes need VOResource XML for this table.