It was discovered on 12 July 1923, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.
[1] In August 2006, a rotational lightcurve of Priska was obtained from photometric observations by Italian amateur astronomers Roberto Crippa and Federico Manzini.
Lightcurve analysis gave a rotation period of 16.22 hours with a brightness amplitude of 0.61 magnitude (U=2).
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, Priska measures between 16.71 and 20.391 kilometers in diameter and its surface has an albedo between 0.037 and 0.088.
[6][7][8][9][10][11][12] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0511 and a diameter of 18.59 kilometers based on an absolute magnitude of 12.5.