Project 10073 Record Card and Related Correspondence — April 1958

This document is a collection of records related to Project 10073, focusing on UFO sightings reported in April 1958. The primary case detailed is a sighting on April 30, 1958, at Lowry AFB, Colorado, by two experienced navigation instructors from the USAF Academy, Captain W.H. Gibson and Flight Lieutenant D.J. Connolly. The observers, who were using a six-inch reflector telescope, described a satellite-type vehicle that appeared to have two sections of differing reflectivity and a reddish tint. The object moved smoothly across the sky, passing near the star Spica and the planet Jupiter before disappearing into a cloud deck. The report notes that the observers were amateur astronomers and considered highly reliable. The sighting was subsequently evaluated by the Air Technical Intelligence Center (ATIC) and Dr. J. Allen Hynek, who concluded that the object was the 1958 Gamma satellite (Vanguard). The document also includes a summary table of May 1958 sightings, which lists various phenomena including balloons, aircraft, and astronomical events, alongside several 'unidentified' cases. Additionally, the file contains correspondence from Dr. J. Allen Hynek to Captain George T. Gregory at the Air Technical Intelligence Center, discussing the Lowry AFB sighting and other reports. Hynek expresses his professional opinion on the ambiguity of 'daylight meteor' sightings and the potential for misidentification of satellites, Venus, or weather balloons. The document serves as a record of the military's systematic approach to investigating aerial phenomena during this period, emphasizing the role of expert witnesses and astronomical verification.