 In 2018, Czech astronomers Josef Ďurech and Josef Hanuš published a modeled lightcurve using photometric data from the "Gaia" spacecraft's second data release.It showed a sidereal period of hours (), and gave a spin axis at (18.0°, 78.0°) in ecliptic coordinates (λ, β).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 (WISE), "Kerstin" measures (), () and () kilometers in diameter and its surface has an albedo of (), () and (), respectively.