Apogee
Apogee
It's called an APHELION
A planet or comet's orbit that is farthest from the sun is called the aphelion. This is the point where they are at their greatest distance from the sun in their elliptical orbit.
The point in the orbit of the moon or of an artificial satellite that is most distant from the center of the earth is called the 'apogee'.
An apareon is the point in an orbit around Mars which is most distant from the planet.
Focus or the focal point.
An apoherm is the point most distant from Mercury of an object in orbit around Mercury.
An apocynthion is the point in an object's orbit around a moon which is most distant from the body.
This is the Perihelion. The aphelion is when it is at it's most distant point.
the most distant
The most distant country from the United States is likely Namibia, located in southwestern Africa. The distance is measured from the easternmost point of the U.S. (Point Udall in the U.S. Virgin Islands) to the westernmost point of Namibia. Depending on the specific locations considered, the distance can exceed 8,000 miles. This vast separation highlights the geographical diversity between continents.
That kind of person is most often called a missionary.