The Lincoln Laboratory Experimental Test Site (ETS; obs. code: 704) is an electro-optical test facility located on the grounds of the White Sands Missile Range in Socorro, New Mexico. The ETS is operated by the laboratory for the Air Force; its principal mission is the development, evaluation, and transfer of advanced electro-optical space surveillance technologies. The ETS has been a contributing sensor to the U.S. Air Force Space Command. A spin-off program for NASA, Lincoln Near-Earth Asteroid Research (LINEAR), uses the ground-based electro-optical deep-space surveillance telescopes at White Sands to discover comets and asteroids, in particular near-Earth objects. A large percentage share of all known minor planets in the Solar System have been discovered through this program. As of 2020, the Minor Planet Center credits LINEAR with the discovery of 149,793 minor planets from 1997 to 2012. In terms of the total number of discoveries, LINEAR is the most successful asteroid survey program ever conducted.