urn:nasa:pds:context:investigation:individual.catalina_sky_survey 1.0 1.15.0.0 Product_Context 2021-03-10 1.0 Initial version urn:nasa:pds:context:facility:observatory.mount_bigelow investigation_to_facility urn:nasa:pds:context:facility:observatory.mount_lemmon investigation_to_facility urn:nasa:pds:context:facility:observatory.siding_spring investigation_to_facility urn:nasa:pds:context:facility:observatory.steward-kittpeak investigation_to_facility Individual Investigation 1998 The Catalina Sky Survey (CSS) is a NASA funded project supported by the Near-Earth Object Observation Program (NEOO) under the Planetary Defense Coordination Offices (PDCO). It is based at the University of Arizona's Lunar and Planetary Laboratory in Tucson, Arizona. The mission at CSS is fully dedicated to the discovery and tracking of near-Earth objects (NEOs). This is in an effort to meet the U.S. Congressional mandate to catalogue at least 90 percent of the estimated population of NEOs larger than 140 meters. Some of these NEOs classify as potentially hazardous asteroids (PHAs) which pose a potential impact threat to Earth.