Sighting Report — Lillhärdal, Sweden, July 23, 1946

On July 24, 1946, Bengt Turell, an observer at the National Land Survey of Sweden (Rikets allmänna kartverk), submitted a report to the Swedish Defence Staff (Försvarsstaben) regarding an aerial sighting that occurred the previous day. On July 23, 1946, at 08:40, Turell and his colleague, geodetic assistant Ernst Olofson, were located 10 kilometers southwest of Lillhärdal. They observed a dark, spherical projectile moving at a high speed in a southwest direction. The object was estimated to be at an altitude of approximately 20 degrees zenith distance. The witnesses noted that the object appeared to have a diameter of about one-fifth that of the sun. As the object approached and then moved away from their position, it emitted a loud, rising and falling humming sound. The observation lasted for several seconds before the object was no longer visible. Turell explicitly noted that no rocket trail was observed, nor was there any light radiation emanating from the object.