:O Radius has been determined by an occultation==References====Further reading==* NASA Planetary Data System (PDS)* Asteroids with Satellites* Minor Planet discovery circumstances* Supplemental IRAS Minor Planet Survey (SIMPS) and IRAS Minor Planet Survey (IMPS)** SIMPS & IMPS (V6, additional, from here)** Asteroid Data Archive (dead link) Archive "Planetary Science Institute"==External links==* Planetary fact sheets* Asteroid fact sheet* All (known) Bodies in the Solar System Larger than 200 Miles in Diameter - in an image, put side-by-side.
* Size comparison of asteroids and comets visited by space probe (Parent article of image by Planetary Society)* NASA Planetary Data System (PDS)* Asteroids with Satellites* Minor Planet discovery circumstances* Supplemental IRAS Minor Planet Survey (SIMPS) and IRAS Minor Planet Survey (IMPS)** SIMPS & IMPS (V6, additional, from here)** Asteroid Data Archive (dead link) Archive "Planetary Science Institute"