PROJECT 10073 RECORD CARD — San Antonio, Texas, 18 September 1960

On the evening of September 18, 1960, at approximately 1910 hours, a sighting of an unidentified aerial object occurred in San Antonio, Texas. The primary witness, a physicist at Trinity University and a member of the local Moonwatch team, observed the object while at his home. He described the object as round, yellowish-white in color, and approximately five times the size of Venus. He noted that it appeared to 'wink like a star' and traveled across the sky from the southwest to the northeast at a speed comparable to that of the satellite Sputnik I. The witness observed the object for approximately three minutes, noting that it appeared to curve to the right as it neared the horizon, disappearing at about 350 degrees. The witness initially consulted with other Moonwatch officials, who suggested that the observed curve was consistent with satellite behavior. However, official investigations conducted by the Air Technical Intelligence Center (ATIC) concluded that the object was likely a high-flying aircraft. The analysis suggested that the aircraft was flying along one of the air lanes leading from San Antonio. Because the aircraft was positioned to the west at a high altitude, it remained illuminated by sunlight while the observers on the ground were in darkness, creating an unusual visual effect. U.S. Air Force officials in Washington confirmed that their early warning radar network had no record of an object in the sky at that time. The incident was documented across several forms, including a Project 10073 record card, a memorandum, and a U.S. Air Force UFO analysis sheet.