Asteroid 2201, Oljato, an Apollo asteroid, was discovered on December 12, 1947-Dec-12 by Henry L. Giclas at Lowell Observatory in Flagstaff, Arizona. It has a period of 3 years, 75 days and is about 1.8 kilometers in diameter.
It was named for the Place of Moonlight Water (Ooljeeto in Navajo) near Oljato-Monument Valley, Utah, a location where moonlight reflects off moisture collecting in the sand at night.
Its astrological meaning seems to be basically a pipe dream or mirage.