Linked from

The 58 pages that link to Astrometry, each with the reason it gives.

• Proper motionNarrower topic: Astrometric observations track the changing positions from which proper motion is calculated.

• OccultationNarrower topic: Occultation timings provide precise positional constraints for Solar System bodies.

• Equatorial coordinate systemNarrower topic: Equatorial coordinates provide a standard way to express astrometric positions.

• SiriusNarrower topic: Precise astrometry tracks Sirius’s wobble and the orbit of its companion.

• GaiaNarrower topic: Gaia’s central task is measuring stellar positions and their changes across the sky.

• Clyde TombaughNarrower topic: Tombaugh’s search was a large-scale astrometric survey.

• International Celestial Reference SystemNarrower topic: The ICRS supplies the common celestial orientation for modern high-precision astrometry.

• Horizontal coordinate systemNarrower topic: Horizontal coordinates provide one observational frame for measuring sky positions.

• Friedrich Wilhelm BesselNarrower topic: Bessel’s precise positional observations helped establish modern astrometry.

• Astronomical nutationNarrower topic: Accurate astrometry requires accounting for nutation’s shifts in the celestial coordinate frame.

• Heinrich Wilhelm Matthias OlbersNarrower topic: Precise positional measurements underpinned Olbers’s discovery and tracking of asteroids.