Dictionary term
Marcq Saint-Hilaire Method
Direct answer
Marcq Saint-Hilaire Method is the celestial-navigation procedure comparing observed altitude with altitude computed for an assumed position.
Marcq Saint-Hilaire Method is a modern intercept sight method used in historical astronomy, timekeeping, or navigation.
Marcq Saint-Hilaire Method is a modern intercept sight method used in historical astronomy, timekeeping, or navigation.
An engraved functional orientation; the page explains the real instrument, method, or publication.Quick reference
- Use when
- Use Marcq Saint-Hilaire Method by computing altitude and azimuth, finding the intercept, and drawing the perpendicular position line.
- Do not use it for
- The named method is a complete workflow, not just the mnemonic used to choose toward or away.
- Reference category
- Historical Almanacs & Instruments
- Related terms
- Sight Reduction, Intercept Method, Line of Position, Celestial Position Fix
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The story behind Marcq Saint-Hilaire Method
Developed in the nineteenth century, the method associated with Marcq de Saint-Hilaire became standard marine practice.
Marcq Saint-Hilaire Method in spiritual tradition
Marcq Saint-Hilaire Method rewards careful observation, explicit assumptions, and humility about the limits of every model or measurement.
Marcq Saint-Hilaire Method: fact and faith, kept distinct
This is a factual history-of-science, instrument, timekeeping, or navigation reference. It may support wonder and disciplined attention without becoming a claim of fate, worship, or private revelation.
Marcq Saint-Hilaire Method in numerology
Marcq Saint-Hilaire Method is not a numerology claim. Any numbers attached to it should retain their ordinary scientific, calendrical, navigational, or historical meaning unless a separate symbolic interpretation is clearly labeled.
Why Marcq Saint-Hilaire Method matters
Marcq Saint-Hilaire Method matters because it allows a convenient assumed position and straightforward plotting instead of solving directly for the observer's coordinates.
Marcq Saint-Hilaire Method at work: an example
A navigator marks the assumed-position point, lays off the intercept on the azimuth, and draws the line at right angles.
Where interpretation stops
Marcq Saint-Hilaire Method is presented as sourced astronomy, calendrical, Earth-science, cultural, or instrument-history reference. Definitions should distinguish measured phenomena from civil convention and historical interpretation, preserve location and time dependencies, and avoid turning factual sky data into a deterministic personal claim.
Sources and editorial method
Research references used for this entry include:
- National Geospatial-Intelligence Agency: The American Practical Navigator - Official modern reference for navigation principles, celestial observations, sight reduction, and navigational tables.
- Source
- The Great Almanac Dictionary
- Category
- Historical Almanacs & Instruments
- Also appears in
- Historical Almanacs & Instruments
- Aliases
- None listed
- Last updated
- 2026-07-16
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Common questions
What is Marcq Saint-Hilaire Method?
Marcq Saint-Hilaire Method is the celestial-navigation procedure comparing observed altitude with altitude computed for an assumed position.
How is Marcq Saint-Hilaire Method used in an almanac?
Use Marcq Saint-Hilaire Method by computing altitude and azimuth, finding the intercept, and drawing the perpendicular position line.
What should I avoid when interpreting Marcq Saint-Hilaire Method?
The named method is a complete workflow, not just the mnemonic used to choose toward or away.
