celestial equator

noun

Definition of celestial equator

: the great circle on the celestial sphere midway between the celestial poles

Examples of celestial equator in a Sentence

Recent Examples on the Web During the equinox, the sun moves north along the celestial equator. Lisa Stardust, Teen Vogue, "How to Celebrate the Spring Equinox 2020 By Zodiac Sign," 19 Mar. 2020 According to the Farmer’s Almanac, the sun will cross the celestial equator from south to north. Isabel Garcia, House Beautiful, "The Earliest Spring in More Than a Century Is Happening This Week," 16 Mar. 2020 Betelgeuse is a red supergiant star in Orion, a prominent constellation that spans the celestial equator. The Economist, "Stellar evolution Might there soon be a supernova near Earth?," 11 Jan. 2020 Since late last March, the sun has been north of the celestial equator, giving us long days and a high sun angle. Mike Lynch, Twin Cities, "Mike Lynch: Great autumn galaxy gazing," 22 Sep. 2019 After this Monday, the sun’s path in the sky will sink lower and lower, south of the celestial equator, and the days will get shorter. Mike Lynch, Twin Cities, "Mike Lynch: Great autumn galaxy gazing," 22 Sep. 2019 The sun’s path across the daytime sky is right along the celestial equator, an imaginary line in the dome of the sky that is a projection of the Earth’s equator. Mike Lynch, Twin Cities, "Mike Lynch: Great autumn galaxy gazing," 22 Sep. 2019 This time of year the full moon is at the intersection of the ecliptic and celestial equator, and because of that the full moon’s path among the stars is nearly parallel to the horizon. Mike Lynch, Twin Cities, "Mike Lynch: The harvest moon is shining bright this week," 15 Sep. 2019 During the equinox, the sun crosses the Earth's celestial equator, an imaginary line that stretches from the north to the south. Leada Gore, AL.com, "First day of fall 2017: Autumnal Equinox is today; what to know," 22 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'celestial equator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of celestial equator

1848, in the meaning defined above

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The first known use of celestial equator was in 1848

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Cite this Entry

“Celestial equator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/celestial%20equator. Accessed 8 Aug. 2020.

More from Merriam-Webster on celestial equator

Britannica.com: Encyclopedia article about celestial equator

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