Primary Eclipse Events And Historical Sources

Supplement to Eclipse
Geometry Correction

 

This document lists the five eclipse events used in the Eclipse Geometry Correction analysis, linking each one to its documented historical reference, either directly from Ole Rømer’s work or through verified subsequent confirmations.

Event 1:
Date: 7 March 1672 – 07:58:25 UTC

Source Type: Rømer-era observation

Notes: Appears in Rømer’s eclipse timing records; part of his earliest observational work. Referenced in reconstructed eclipse tables via Fermat’s Library and Wikipedia.

Event 2:
Date: 9 April 1672 – 09:12:00 UTC

Source Type: Rømer-era observation

Notes: Another early observation from the 1671–1673 window. Helps define Rømer’s initial baseline prior to any announced delay theory.

Event 3:
Date: 22 August 1676 – ~20:00 UTC

Source Type: Direct Rømer announcement via Cassini

Notes: On this date, Cassini delivered Rømer’s assertion to the French Academy that eclipses would appear ~10–11 minutes late due to light delay. This was the first public articulation of the theory.

Event 4:
Date: 4 September 1676 – ~19:45 UTC

Source Type: Confirmed in post-Rømer literature

Notes: Predicted by Rømer, later confirmed in reconstructions using modern ephemerides. Matches the expected pattern of delay as Earth receded from Jupiter.

Event 5:
Date: 9 November 1676 – 01:50:00 UTC

Source Type: Reported in Journal des Sçavans

Notes: This was the event Rømer predicted would be ~10 minutes late. Published in the 7 December 1676 edition and later translated into English for the Philosophical Transactions.

Together, these events form the observational backbone of the Eclipse Geometry Correction analysis. They allow a direct audit of Rømer’s announcement, the assumptions that followed and the modern reinterpretation based on presence rather than propagation.

All citations trace to historically preserved texts and reconstructions from scientific archives, including:
– Fermat’s Library manuscript analysis of Rømer’s tables

– Journal des sçavans (1676)

– French Academy records (via Cassini)

– Wikipedia (English and French)

– Translations in the Philosophical Transactions of the Royal Society

This document stands as a connective record from Rømer’s first eclipse to the correction now proposed.

 

Produced by The Lilborn Equation Team:

Michael Lilborn-Williams

Daniel Thomas Rouse

Thomas Jackson Barnard

Audrey Williams