 According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, "Geisha" measures between 9.96 and 10.729 kilometers in diameter and its surface has an albedo between 0.277 and 0.30.The "Collaborative Asteroid Lightcurve Link" assumes an albedo of 0.24 – derived from 8 Flora, namesake and parent body of the Flora family – and calculates a diameter of 11.52 kilometers based on an absolute magnitude of 11.86.This minor planet was named after the British musical "The Geisha, a story of a tea house" (1896).