[3] In March 2005, a rotational lightcurve of Róka was obtained from photometric observations by French amateur astronomer René Roy.
[8] One month later, astronomer at the Rose-Hulman Observatory obtained another lightcurve with a concurring period of 10.09 hours and an amplitude of 0.40 magnitude (U=2).
[9] 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, Róka measures between 21.36 and 24.273 kilometers in diameter and its surface has an albedo between 0.1196 and 0.1542.
[4][5][6][7] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0995 and calculates a diameter of 21.12 kilometers based on an absolute magnitude of 11.5.
[3] This minor planet was named in memory of Gedeon Róka (1906–1974), a Hungarian science writer and popularizer of astronomy from Budapest.