sentences:  After one month of mapping the orbit was rotated to a periapsis at 13 degrees north latitude, where it remained for one more month.This allowed global imaging and altimetry coverage from 60° south to 60° north, over a total of 300 orbits.After a Moon to Earth transfer and two more Earth flybys, the spacecraft was to head for [[1620 Geographos]], arriving three months later for a flyby, with a nominal approach closer than 100 km.