UFO seen in Lexington Kentucky in 1957

Summary

A witness in Lexington, Kentucky, reported a round white object the size of a dime. The object was seen flying along the curvature of the Earth for 2 to 3 seconds. Although initially considered a balloon or aircraft, the data is insufficient for a clear evaluation. The description and trajectory suggest it might have been a meteor. The report does not include photos, and the witness is civilian.