3401 Vanphilosa stony, eccentric asteroid and sizeable Mars-crosser which orbits the Sun in the inner main-beltwas discovered by the Harvard College Observatory at the Oak Ridge Observatory in August 1981 wherein it was named after Vanessa Hall and Philip Osborne.
It was discovered on 1 August 1981, by and at Harvard's Oak Ridge Observatory (Agassiz Station) in Massachusetts, United States. 
