In astronomy the term perihelion refers to the point in the orbit of an asteroid, comet, or planet when it is closest to the sun. Aphelion refers to the point when the object is farthest away from the sun. research facts about the dwarf planet Ceres. calculate the average orbital speed of Ceres in miles/hour when it is closer to the sun and when it is further away

Answer 1

so, have you done any research yet?