Linked from

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

• ExoplanetRelated: Tracking a star’s sky-plane motion can reveal the gravitational pull of an orbiting planet.

• Radial velocity methodCompared with: It detects a star’s sky-plane wobble, complementary to the radial motion measured here.

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

• PhotometryCompared with: It measures where sources are, while photometry measures how bright they appear.

• Transit methodCompared with: It searches for a planet’s gravitational pull through sideways stellar motion, unlike transit photometry.

• AstrophotographyRelated: Calibrated astrophotographs can support precise positional measurements.

• KinematicsRelated: Repeated position measurements yield stellar and planetary kinematics.

• AstronomyRelated: Position and motion measurements establish stellar distances and map the Milky Way.

• Light curveCompared with: Astrometry tracks positional changes, whereas a light curve tracks brightness changes.

• EphemerisRelated: Observed positions can be compared with ephemerides to refine or test predictions.

• Photographic plateRelated: Astronomers measured star positions on photographic plates across repeated exposures.

• 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.

• Radial velocityCompared with: Astrometry tracks positional motion, complementing spectroscopic radial-velocity measurements.

• John HerschelRelated: Precise positional records supported the systematic surveys Herschel conducted.

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

• Near-Earth objectRelated: Repeated astrometric positions establish a near-Earth object’s orbit.

• Observational astronomyRelated: Precise positions and motions reveal stellar distances and gravitational influences.

• Refracting telescopeRelated: Refractors can provide stable, sharp images for precise positional measurements.

• Direct imaging of exoplanetsCompared with: Astrometric detections infer a planet from the star’s positional wobble, not a planetary image.

• History of astronomyRelated: Improved positional measurement repeatedly tested and refined historical models of the heavens.

• Stellar kinematicsRelated: Astrometry supplies measurements, while kinematics interprets motion distributions.

• Amateur astronomyRelated: Position measurements can support asteroid tracking, orbit refinement, and discoveries.

• Doppler spectroscopyCompared with: Astrometry detects transverse motion, complementary to Doppler spectroscopy's line-of-sight motion.

• Spherical astronomyRelated: Astrometry turns spherical coordinates into observational measurements and catalogs.

• Direct imagingCompared with: Astrometry infers companions from a star’s motion instead of imaging their emitted light.

• Earth orientation parametersRelated: Transforming observed celestial positions to terrestrial locations depends on Earth orientation.

• Planetary transitCompared with: Astrometry detects a planet through the star’s sky-plane wobble rather than a brightness dip.

• Transit timing variationCompared with: Astrometry detects a planet through a star’s sky-plane motion, not altered transit intervals.

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

• Sidereal yearRelated: Accurate stellar positions help establish the reference frame for orbital measurements.

• AntaresRelated: Astrometric measurements establish Antares's distance and motion through the Galaxy.

• Astronomical observationRelated: Position measurements reveal parallax, proper motion, and orbital motion.

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

• Planetary orbitRelated: Tracking a star’s sky-plane motion can reveal the orbit of an unseen planet.

• PrecessionRelated: Accurate star positions must account for precession when compared across epochs.

• Very Long Baseline ArrayRelated: VLBA observations can determine precise radio-source positions and motions.

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

• Stellar orbitRelated: Astrometric measurements reveal a star’s motion across the sky.

• Exoplanet detectionRelated: A planet can make its star trace a small orbit across the sky.

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

• Celestial cartographyRelated: Astrometric measurements supply the precise positions plotted on star maps.

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

• SIMBADRelated: Astrometric measurements help identify and characterize SIMBAD objects.

• AstronomerRelated: Precise positions let astronomers trace stellar motion and map the cosmos.

• Astronomical coordinate systemsRelated: It produces positions whose interpretation requires an explicitly defined coordinate framework.

• FomalhautRelated: Precise position measurements can test whether suspected companions follow planetary orbits.

• Orion ArmRelated: Parallaxes and proper motions help locate stars and gas relative to the arm.

• Astronomical catalogueRelated: Precise coordinates let catalogues distinguish and relocate objects.

• Epsilon EridaniRelated: Astrometric measurements can test whether a planet’s pull explains the star’s apparent motion.