Project 10073 Record Card and Related Correspondence Regarding Fireball Sightings

This collection of documents centers on the investigation of fireball sightings reported by military and civilian pilots between 1957 and 1959. The primary document is a memorandum from the Air Technical Intelligence Center (ATIC), dated August 19, 1959, which responds to a request for information from a researcher at the University of Pennsylvania regarding specific fireball events. The memorandum provides a detailed list of sightings, including the incident on July 5, 1958, where an aircraft at 8,000 feet altitude observed a round, bright green object that burst into a ball of fire, leaving a trail of sparks. The report notes that this event was observed by multiple aircraft and was consistent with the characteristics of a 'true bolide.' The correspondence includes various message forms (CIRVIS reports) documenting the communication between different military commands, including the Air Force Missile Test Center (AFMTC) and the Eastern Sea Frontier, regarding these sightings. The official conclusion across these reports is that the objects were natural fireballs. The documents also highlight the standard procedure of checking for military operations or missile firings in the area to rule out man-made causes for such sightings. The file includes a request for further data from the University of Pennsylvania to assist in calculating atmospheric paths and orbits of these bodies, emphasizing the ongoing cooperation between academic institutions and the U.S. Navy Hydrographic Office in studying these phenomena.