Project 10073 Record Card — Belmont, California, 8 December 1957

This document consists of a Project 10073 Record Card and associated teletype communications regarding an unidentified aerial phenomenon reported on December 8, 1957, in Belmont, California. The report details a sighting by six individuals who contacted the Belmont Police. The witnesses observed a single object described as aircraft-shaped and of aircraft size, appearing pinkish in color. The object was estimated to be at an altitude of approximately 5,000 feet and was observed traveling in an easterly direction for a duration of five to ten minutes. The teletype correspondence, dated December 9, 1957, was transmitted to various Air Force divisions, including the Air Technical Intelligence Center (ATIC) at Wright-Patterson Air Force Base. The report notes that there was very little information available regarding the object's specific features, such as exhaust, sound, or tail configuration. The official conclusion reached by the investigating authorities was that the object was 'probably aircraft,' and that the observed pinkish color was likely a result of the object being viewed at dusk. The document includes meteorological data from the time, noting a temperature of 45 degrees Fahrenheit and a dewpoint of 41 degrees Fahrenheit. The file also contains administrative pages, including a cover sheet for an observation report from the Uruguayan Air Force Intelligence Service, though the primary content focuses on the California sighting.