the action of automatically establishing and maintaining an orientation relative to a star; frequently attributive; cf. star tracker n.

Astronautics. The prearranged meeting in space between two spacecraft or between a spacecraft and a celestial object; an instance of this.

The action of probe, v. (in various senses); an instance of this.

The act or result of linking up; spec. (a) of troops, or in a military context; (b) of spacecraft.