In the late 1990s, a network of astronomers worldwide gathered light curve data that was ultimately used to derive the spin states and shape models of 10 new asteroids, including (165) Loreley. The light curve of this asteroid varies by no more than 0.2 in magnitude, while the derived shape model shows multiple flat spots on the surface.
^Warner, Brian D. (December 2007), Initial Results of a Dedicated H-G Project, Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers34: 113–119, Bibcode:2007MPBu...34..113W.
^Durech, J. et al. (November 2006), Asteroid brightness and geometry, VizieR On-line Data Catalog: J/A+A/465/331, Bibcode:2006yCat..34650331D.