PROJECT 10073 RECORD CARD — Pearl Beach, Michigan, 27 April 1963

This document consists of a Project 10073 record card and a follow-up letter from a civilian witness in Pearl Beach, Michigan, regarding an aerial sighting on April 27, 1963. The witness, who identified as an astronomer, reported observing an object through a telescope at 1950 local time. The object was described as a disc with four red satellites, moving in an outward motion with a magnitude of -2. The witness noted that they were playing cards with a fellow astronomer when they decided to use their telescopes to locate Sirius, at which point they observed the object. The witness also mentioned contacting Dr. Donald H. Menzel of the Harvard College Observatory, who suggested they report the incident to the Air Force. The official conclusion recorded on the project card is that the sighting was a misinterpretation of reflectors on Rawinsonde balloons, which are regularly launched from Green Bay, Wisconsin, and Flint, Michigan.