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ecliptic longitude

noun

  1. 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
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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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.

“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.

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