mean planet

noun Astronomy.

a hypothetical planet that coincides with a real planet when the real planet is at perihelion and that moves in an orbit at a constant velocity equal to the mean velocity of the real planet.

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Nearby words

mean length of utterance, mean lethal dose, mean life, mean line, mean noon, mean planet, mean proportional, mean sea level, mean solar day, mean solar time, mean square

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019