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ecliptic longitude

British

noun

astronomy another name for celestial longitude

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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The modern definition of the new moon occurs “when the Moon and Sun are at the same geocentric ecliptic longitude,” explains NASA’s Scientific Visualization Studio on its website.

From Fox News

“By the modern definition, New Moon occurs when the Moon and Sun are at the same geocentric ecliptic longitude. The part of the Moon facing us is completely in shadow then,” explains the space agency’s Scientific Visualization Studio on its website.

From Fox News

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