Project 10873 Record Card — Cherokee, Wyoming, March 1954

This document consists of a Project 10873 record card and an associated military cable detailing an aerial sighting that occurred on March 27, 1954. The incident involved a glowing bright green object observed by two airline flights near Cherokee, Wyoming. According to the report, the object was first sighted at an altitude of 19,000 feet mean sea level, approximately 12 miles east of Cherokee. The witnesses described the object as appearing 12 to 15 degrees above the horizon before it followed a slanting downward trajectory, moving 30 degrees to the left of the vertical, and eventually disappearing behind a cloud bank. The duration of the observation was recorded as five seconds. Weather conditions at the time were noted as clear over an undercast with a high cloud bank. The sighting was confirmed by the pilot and co-pilot of the aircraft. A secondary report mentioned in the cable notes that another observation was made by a pilot five miles west of Sinclair, Wyoming, at 13,000 feet mean sea level at the same time. The official conclusion reached by the investigating authorities was that the object was a meteor, noting that the description provided by the witnesses was consistent with such a phenomenon.