right ascension
noun
: the arc of the celestial equator between the vernal equinox and the point where the hour circle through a given body intersects the equator reckoned eastward commonly in terms of the corresponding interval of sidereal time in hours, minutes, and seconds
Examples of right ascension in a Sentence
Recent Examples on the Web
Declination and right ascension are the two primary axes of the celestial sphere.
—
Reece Rogers, WIRED, 21 Dec. 2022
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Reece Rogers, WIRED, 21 Dec. 2022
Dictionary Entries Near right ascension
Cite this Entry
“Right ascension.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/right%20ascension. Accessed 26 Nov. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share