The sun has two types of period of rotation, the sidereal
rotation period and the synodic rotation period. The sidereal
rotation period is 24.47 days. The synodic rotation period is 26.24
days.
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The rotation period of Venus is 243.0187 Earth days
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Pluto has the longest REVOLUTION period
Venus has the longest ROTATION period
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its revolution period is 687 (Earth) days.And its rotation
period is 24 hours, 39 minutes