Relatório Sobre OANI No. 017 — Araras, São Paulo, 1955

This SIOANI report, numbered 017 and dated December 1, 1968, documents a UFO sighting that occurred in May 1955 in Araras, São Paulo, Brazil. The primary witness, Adolfo Mario Mathiesen, a 52-year-old farmer, reported observing a metallic, plate-shaped object approximately 30 meters in diameter. According to the report, the object descended from a high altitude, hovered at a height of 50 meters, and then performed a maneuver changing from a vertical to a horizontal orientation before accelerating rapidly away. The witness estimated the duration of the event to be between two and three minutes. The report notes that the witness was at his farm office at the time, and pigs located about 100 meters away remained calm during the event. The sighting was later discussed in local newspapers and on radio programs hosted by José Schimdt. The document includes a section on 'research to be done' which mentions other potential sightings or related phenomena in the region, including an incident at a gas station on the Anhanguera highway and reports from Nova Odessa and Rio Claro. The report is part of the SIOANI archive, digitized by the GUG (Grupo Ufológico de Guarujá).