ANCIENT INQUIRY
AT-1220

The IAU Resolutions on Astronomical Reference Systems, Time Scales, and Earth Rotation Models: Explanation and Implementation

URL · Synthesis / reference

partially_verifiedNo recorded retraction flag1 usage record

Source record

This is one canonical bibliographic record with topic-scoped research-use entries. It does not reproduce the paper, book, text, dataset, image, or manuscript and does not imply that full text was reviewed.
Canonical source ID
AT-1220
Accepted usage IDs
AT-1220
Types
URL
Roles
Synthesis / reference
Verification
partially_verified
Archive state
not assessed in this refresh yet
Access
not assessed in this refresh yet
Rights
link-and-citation use only unless a documented license or public-domain basis permits more
Public reproduction
Not cleared; citation and link only.
Correction / retraction
not-applicable/no DOI

Recorded research uses

AT-1220

Precession of the Equinoxes

Why Ancient Inquiry uses this citation here

U.S. Naval Observatory technical reference for modern precession-nutation and astronomical reference-system implementation; not a source for ancient history.

What this usage does not establish

Bibliographic verification does not by itself establish that the full text was read.
Open topic

Topics citing it and claims using it

Topic citing this source

Precession of the Equinoxes

Open topic
Supporting citation for public claim

Axial precession slowly changes Earth's rotational-axis orientation and shifts the equinox points relative to the background stars.

Precession is one of the most important real astronomical concepts in the ancient astronomy cluster. The physical effect is established, and the Greek source trail through Hipparchus and Ptolemy is the clearest early technical evidence.
Open claim topic
Supporting citation for public claim

Modern astronomy places the axial-precession cycle at approximately 25,700 to 26,000 years.

Precession is one of the most important real astronomical concepts in the ancient astronomy cluster. The physical effect is established, and the Greek source trail through Hipparchus and Ptolemy is the clearest early technical evidence.
Open claim topic
Supporting citation for public claim

Axial precession changes the stellar background of equinoctial points and the identity of pole stars over millennia.

Precession is one of the most important real astronomical concepts in the ancient astronomy cluster. The physical effect is established, and the Greek source trail through Hipparchus and Ptolemy is the clearest early technical evidence.
Open claim topic
Supporting citation for public claim

The precession of the equinoxes is the long-term displacement of equinoctial points against the stellar background caused by axial precession.

Answer / theory: It is the slow shift of the equinox points against the background stars caused by Earth's axial precession. What supports it: Modern astronomy, Earth rotation models, and historical star-position comparisons. What is weak or disputed: The physical phenomenon is not disputed; ancient interpretation is. Evidence level: Strong Evidence.
Open claim topic

Access and actions

The IAU Resolutions on Astronomical Reference Systems, Time Scales, and Earth Rotation Models: Explanation and Implementation

Open original

Search Ancient Inquiry

Open complete search

Visual theme

Theme intensity changes decoration only. Evidence and relationship semantics never change.

Prepare an issue report

This static site cannot transmit a correction by itself. It prepares a complete report with page and build provenance for the published corrections channel.

Open corrections instructions