Binary stars
type: Concept
narrower: Astrometric binary stars

Astrometric binary stars
type: Concept
contributor: AAS Frey.Katie
modified: 2020-10-26T18:48:22.015Z
modified: 2020-10-26T18:48:10.743Z
alternative label: Astrometric binaries
broader: Binary stars
definition: A binary star in which the presence of an unresolved companion is revealed by small oscillations in the movement of the visible component caused by the gravitational influence of the unseen component.