Orbital extreme is a term used to describe the farthest points of an object's orbit around another object. Perigee, with 7 letters, is the point in an object's orbit closest to the other object. Apsis, with 5 letters, is the point in an object's orbit furthest from the other object. Aphelion, with 8 letters, is the point in an object's orbit furthest from the Sun. APOGEE, with 6 letters, is the point in an object's orbit closest to the Sun.