👉 In astronomy, an "ephelis" is a term used to describe the position of celestial objects in relation to each other. These positions are often described with respect to their apparent motion relative to a central object (usually the Sun) and can be classified into two main categories: elliptical and circular. Elliptical Ephelis refers to the orbiting of celestial bodies around their center, while circular Ephelis is the orbit of celestial objects in a plane.