hour angle

noun

Definition of hour angle

: the angle between the celestial meridian of an observer and the hour circle of a celestial object measured westward from the meridian

First Known Use of hour angle

circa 1837, in the meaning defined above

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The first known use of hour angle was circa 1837

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Cite this Entry

“Hour angle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hour%20angle. Accessed 22 Jan. 2021.

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Britannica.com: Encyclopedia article about hour angle

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