 According to the surveys carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), the Japanese Akari satellite, and the Infrared Astronomical Satellite IRAS, "Walküre" measures (), () and () kilometers in diameter and its surface has an albedo of (), () and (), respectively.The "Collaborative Asteroid Lightcurve Link" derives an albedo of 0.0634 and gives a diameter of 38.41 kilometers (identical to IRAS) based on an absolute magnitude of 10.69.Alternative mean-diameter measurements published by the WISE team include () and () with corresponding albedos of () and ().