Project 10073 Record Card — Ukiah, California, 9 May 1955

On May 9, 1955, a civilian Ground Observer Corps (GOC) observer named Ronald Nimmler reported a sighting in Ukiah, California. The witness observed a single, silver, circular object that remained stationary in the sky for approximately five hours. The object was located to the southwest of the observer's position. Despite the witness using binoculars to examine the object, no other details were discernible, and the object exhibited no apparent motion. The sighting was reported to the 28th Air Division. Following an evaluation of the report, the 28th Air Division concluded that the sighting was not an unidentified aerial phenomenon, but rather the planet Jupiter, which may have appeared unusually large to the observer. The report notes that other aircraft, specifically Western Flight 731 and United Flight 450, passed through the area and reported nothing unusual. Based on these findings, the 28th Air Division determined that no further investigation was required.