 The "Collaborative Asteroid Lightcurve Link" characterizes "Irmela" as a common S-type asteroid, derives an albedo of 0.0838 and calculates a diameter of 19.05 kilometers with an absolute magnitude of 11.91.This minor planet was named after Irmela Ruska, wife of the inventor of the electron microscope and 1986 Nobelist, the German physicist Ernst Ruska (1906–1988), who shared the Nobel prize with Gerd Binnig and Heinrich Rohrer.The naming was granted by Max Wolf to his colleague August Kopff, himself a prolific discoverer of minor planets.