{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "IRSA Support", "hasEmail": "mailto:irsasupport@ipac.caltech.edu"}, "description": "PPMXL is a catalog of positions, proper motions, 2MASS- and optical photometry of 900 million stars and galaxies, aiming to be complete down to about V=20 full-sky. It is the result of a re-reduction of USNO-B1 together with 2MASS to the ICRS as represented by PPMX.", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "https://irsa.ipac.caltech.edu/data/PPMXL/gator_docs/ppmxl_colDescriptions.html", "format": "HTML", "mediaType": "text/html"}, {"@type": "dcat:Distribution", "downloadURL": "https://irsa.ipac.caltech.edu/SCS?table=ppmxl&", "format": "BIN", "mediaType": "application/octet-stream"}], "identifier": "ivo://irsa.ipac/ppmxl/catalog", "keyword": ["__"], "landingPage": "ivo://irsa.ipac/ppmxl/catalog", "license": "https://www.usa.gov/government-works", "modified": "2026-04-06", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "NASA/IPAC Infrared Science Archive"}, "theme": ["Astrophysics"], "title": "PPMXL Catalog"}