That point, in the real or apparent orbit of one star revolving around another, at which the former is nearest to the latter.

means the least separation of the principals in a binary. Similarly, its homologues are perigee and perihelion when orbiting the Earth or the Sun. Elsewhere, the term pericentron is used to describe the closest approach between two bodies in orbit.

The near point of the orbit of a body to the star around which it is orbiting.

In an orbit around a star, the closest point to the star.

The position in an orbit about a star at which the orbiting object is at its least distance from the star.

The point in an elliptical orbit around a star that is closest to the star's center.

the point in an object's orbit at which it is closest to the star it orbits

The point of closest approach between two stars that are in orbit around each other. The opposite of apastron.

The place in the orbit of a star in a binary-star sys-tem where it is closest to its companion star.

in the orbit of a body around another, it represents the point of minimum distance between the two.