== External links ==*Orbital simulation of asteroid 255 Oppavia*Asteroid 255 Oppavia in Planetky z našich luhů a hájů (in Czech language)== References ==*The Asteroid Orbital Elements Database*Minor Planet Discovery Circumstances*Asteroid Lightcurve Data File
* Список астероидов (201—300)* Orbital simulation of asteroid 255 Oppavia* Asteroid 255 Oppavia in Planetky z našich luhů a hájů* The Asteroid Orbital Elements Database* Minor Planet Discovery Circumstances* Asteroid Lightcurve Data File