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Astrometry (Parallax)/Evidence
Method evidence record

Astrometry (Parallax)

Astrometric parallax is the foundational geometric method for measuring distances to nearby stars, based on observing the apparent shift in a star's position as Earth orbits the Sun. First successfully demonstrated by Friedrich Wilhelm Bessel in 1838 for the star 61 Cygni, parallax remains the most direct and reliable distance measurement in astronomy, anchoring the entire cosmic distance ladder.

Sources recorded, not reviewed

Source record

Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.

Astrometric Parallax Method for Distance Measurement
Taxonomic method record · process-pipeline / astronomy
  • ESA (1997). The Hipparcos and Tycho Catalogues. Astrometric and photometric star catalogue. European Space Agency Technical Reports, SP-1200. · URL
  • van Leeuwen, F. (2007). Validation of the new Hipparcos reduction. Astronomy & Astrophysics, 474(2), 653-664. · DOI 10.1051/0004-6361:20078357
  • Gaia Collaboration (2016). Gaia Data Release 1: Astrometry-one billion positions, two million proper-motions and parallaxes. Astronomy & Astrophysics, 595, A2. · URL
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Curated claims

Claims persisted in the evidence ledger, each with its own assessment.

No curated claims yet

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Related methods

Generated from the method graph and shown as machine-suggested relations — no evidence claim is inferred.

Same method familyGravitational Microlensingmachine-suggested · Relational suggestion, not evidence.Same method familyKinematic Distancemachine-suggested · Relational suggestion, not evidence.Same method familySED Fittingmachine-suggested · Relational suggestion, not evidence.

Evidence status

Sources recorded, not reviewed

Bibliographic sources are present. Claim-level evidence review has not been performed.

Sources

3 recorded citations, copied from the method source record.

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