Dictionary term
Horizontal Coordinate System
Direct answer
Horizontal Coordinate System: The Horizontal Coordinate System locates an object by altitude above the local horizon and azimuth around it.
It is an observer-centered altitude and azimuth grid.
It is an observer-centered altitude and azimuth grid.
A scientific orientation to scale, light, or motion; the article supplies the precise definition.Quick reference
- Use when
- Attach an exact place and time because both coordinates continually change.
- Do not use it for
- Azimuth conventions differ, so identify where zero degrees begins.
- Reference category
- Astronomy & Skywatching
- Related terms
- Equatorial Coordinate System, Ecliptic Coordinate System, Galactic Coordinate System, Astronomy
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The story behind Horizontal Coordinate System
Horizontal coordinates grew from practical observing, surveying, and navigation.
Horizontal Coordinate System: fact and faith, kept distinct
This is a factual astronomy reference. It can support wonder at the created order without becoming a claim of fate, worship, or private revelation.
Horizontal Coordinate System in numerology
Horizontal Coordinate System 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 Horizontal Coordinate System matters
It turns catalogue positions into directions a skywatcher can follow.
Horizontal Coordinate System at work: an example
Altitude 45 degrees and azimuth 90 degrees places an object halfway up the eastern sky.
Where interpretation stops
Horizontal Coordinate System 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:
- U.S. Naval Observatory: Astronomical Almanac Glossary - Definitions for astronomical coordinates, time, reference systems, and observable phenomena.
- NASA Science: Skywatching FAQ - NASA guidance for observing stars, planets, constellations, and changing sky events.
- Source
- The Great Almanac Dictionary
- Category
- Astronomy & Skywatching
- Also appears in
- Astronomy & Skywatching
- Aliases
- None listed
- Last updated
- 2026-07-16
Find an object from your horizon
Horizontal Coordinate System in a book is one thing; Horizontal Coordinate System in your own birth chart is your life. The Oracle casts your real chart and tells you what it means for your love, your work, and your year ahead, in conversation, free.
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Common questions
What is Horizontal Coordinate System?
The Horizontal Coordinate System locates an object by altitude above the local horizon and azimuth around it.
How is Horizontal Coordinate System used in an almanac?
Attach an exact place and time because both coordinates continually change.
What should I avoid when interpreting Horizontal Coordinate System?
Azimuth conventions differ, so identify where zero degrees begins.
