We mentioned above that Dawn's orbit will take 27 hours, 13 minutes. We described and depicted last month how the low point of Dawn's orbit will gradually shift southward on each successive revolution. You can think of the motion in an elliptical orbit as being somewhat like that of a swing. Dawn's elliptical orbit around Ceres will behave somewhat like the swing. The shape of Ceres' orbit is between that of Saturn's (which is more circular) and Mars' (which is more elliptical).