2004 KV18 was first observed at facilities located in a special land use known as what?
2004 KV18:  It was first observed on 24 May 2004, by astronomers at the Mauna Kea Observatories on Hawaii, United States. Mauna Kea Observatories:  The facilities are located in a 525-acre (212 ha) special land use zone known as the "Astronomy Precinct", which is located within the 11,228-acre (4,544 ha) Mauna Kea Science Reserve.
"Astronomy Precinct"