Oak Ridge Observatory, also called the George R. Agassiz Station, operated in Harvard, Massachusetts, from 1933 until August 19, 2005 under the Smithsonian Astrophysical Observatory. For about its first 40 years, it concentrated on tracking minor planets and asteroids, a legacy reflected in asteroid 4733 ORO, discovered there in 1982 and named for the site. From the 1980s, astronomers also used it for long-term stellar measurements that contributed to the search for planets beyond the Solar System. Its major instruments included a 61-inch reflector and an 84-foot steerable radio telescope used for SETI work, and the site remains associated with asteroid studies, planet-hunting, and extraterrestrial intelligence research.

Harvard, Massachusetts · USA