{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "HEASARC Help Desk", "hasEmail": "mailto:andrew.ptak@nasa.gov"}, "description": "This catalog is a version of the 1990 issue of the "Molonglo Reference Catalog of Radio Sources" (MRC). The MRC is one of the largest homogeneous catalogs of radio sources, containing 12,141 discrete sources with flux densities greater than 0.7 Jy in the declination range +18.5 degrees to -85 degrees (1950 coordinates) and excluding regions within 3 degrees of the Galactic equator. This is a service provided by NASA HEASARC .", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "https://heasarc.gsfc.nasa.gov/W3Browse/all/mrc.html", "format": "HTML", "mediaType": "text/html"}, {"@type": "dcat:Distribution", "downloadURL": "https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=mrc&", "format": "BIN", "mediaType": "application/octet-stream"}], "identifier": "ivo://nasa.heasarc/mrc", "keyword": ["__"], "landingPage": "ivo://nasa.heasarc/mrc", "license": "https://www.usa.gov/government-works", "modified": "2026-04-06", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "High Energy Astrophysics Science Archive Research Center"}, "theme": ["Astrophysics"], "title": "Molonglo Reference Catalog of Radio Sources"}