1537 Transylvania lightcurve has been obtained, and "Transylvania"s period is still uncertain. According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, "Transylvania" measures between 13.77 and 21.49 kilometers in diameter and its surface has an albedo between 0.05 and 0.1619. The "Collaborative Asteroid Lightcurve Link" derives an albedo of 0.1047 and a diameter of 13.60 kilometers based on an absolute magnitude of 12.4. This minor planet was named after the historical region of Transylvania, located in what is now Romania. Formerly, it was part of
Transylvania the Romanians). The Magyars conquered much of Central Europe at the end of the 9th century. According to Gesta Hungarorum, the Vlach voivode Gelou ruled Transylvania before the Hungarians arrived. The Kingdom of Hungary established partial control over Transylvania in 1003, when king Stephen I, according to legend, defeated the prince named "Gyula". Some historians assert Transylvania was settled by Hungarians in several stages between the 10th and 13th centuries, while others claim that it was already settled, since the earliest Hungarian artifacts found in the region are dated to the first half of the 10th century. Between 1003 and