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sun's mean longitude

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Definition of sun's mean longitude

: the geocentric celestial longitude which the sun would have if its apparent annual motion in the ecliptic were at a uniform average or mean angular velocity

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“Sun's mean longitude.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sun%27s%20mean%20longitude. Accessed 22 Oct. 2021.

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