Horizontal coordinate system

Rarity: Rare

A topic known well beyond its field, found in many languages.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

The horizontal coordinate system is a celestial coordinate system that uses the observer's local horizon as the fundamental plane to define two angles of a spherical coordinate system: altitude and azimuth.

Excerpt from the Wikipedia article “Horizontal coordinate system”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: TWCarlson, CC BY-SA 3.0, via Wikimedia Commons.