Neptune, a giant that is the eighth planet from the sun, requires 19.1 hours to make one rotation on its axis. This gives Neptune the fourth shortest day of the planets in our solar system, behind ... Read More ». http://www.answerbag.com/q_view/2033357.
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Report Abuse. Uranus revolves around the Sun in 84 years. Neptunes REVOLVES around the Sun in 165 years. Since it was discovered in 1846, it will not have completed its first orbit of the Sun since discovery until four years from now. Rotation is on an axis, and measures the length of the planet's day, not year.
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Best Answer: 84 years. But planets are said to revolve around the Sun, not rotate. Rotation refers to daily rotation on the axis while revolution refers to the orbital motion around the Sun. The Neptune rotates on its axis once every 18 hours and revolves around the Sun once every 84 years.
https://answers.yahoo.com/question/index?qid=20070210130417AAEHhZh
Neptune takes 16 hours, 6 minutes and 36 seconds to rotate once on  its axis. That's about 2/3rds of an earth day.    Note that the period of rotation is measured by w … atching Neptune's  magnetic field. The time cited is the time it takes the whole  planet to rotate once on its axis.
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Neptune revolves or orbits around the sun once every 164.79 Earth years, or once every 60,190 Earth days. Neptune travels at an average speed of 12,253 miles per hour or 19,720 kilometers per hour in its orbit around the sun.
http://coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/neptune_orbit.shtml
Neptune's rotation, or the amount of time it takes to make one revolution on its axis, takes approximately 16 hours and 7 minutes. Neptune's orbit around the sun takes approximately 165 years.Sourc... Read More ». http://www.answerbag.com/q_view/2124177.
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The planet Neptune does not rotate the Earth, but it rotates around the sun. It does so once every 165 years. It can only be seen using a telescope and has 13 known moons.Source:NASA: Profile of Ne... Read More ».
http://www.qacollections.com/How-long-does-it-take-for-Neptune-to-rotate
Answers. Best Answer: The sidereal (sr) rotation period is 16 hours, 6 minutes and 36 seconds. That's how long it takes to rotate relative to the stars. Since the Neptune year is 60,190 earth days, you need to figure out how many Neptune sidereal days that is. (Answer: 89,669 Nep. sr days). Then figure out what time period is 1/ 89,669 of a Nepture sr day. (Answer: 0.65 seconds).
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This was the first reliable determination of Neptune's rotation period. The 12 to 18 hour rotation periods found for the atmospheric features differ from the above value because of winds. (see the related link for additional information) It takes Neptune 16 hours and 6 minutes to rotate once on its axis.  This means that one day on Neptune is the same as about 16 hours on  Earth.
http://www.answers.com/Q/How_long_does_it_take_for_Neptune_to_rotate
The planet Neptune takes about 16 hours, 6 minutes, 36 seconds for one complete rotation, as evidenced by its visible outer atmosphere. This is a day on Neptune. That's ab … out 2/3rds of an earth day. Note that the period of rotation is measures by watching Neptune's magnetic field.
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how long does it take neptune rotate
It takes 19.1 hours for Neptune to rotate.