How long is Neptune's rotation?

Answer 1

The period of rotation (day) on Neptune varies by latitude, but the core rotation takes about 16.11 Earth hours. (16 hours, 6 minutes, 36 seconds) The atmospheric rotation appears faster near the poles (about 12 hours to rotate once) than at the equator (about 18.1 hours to make a complete rotation).

Neptune does not have the same type of solid surface found on Earth and the smaller planets. Under the thick hydrogen-helium atmosphere is a dense slush of water, ammonia, and methane, with only a small rocky Earth-sized core.

Answer 2

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). Then add that to the sr day to get the average solar day.

But ... since the solar day is only 0.65 seconds longer than the sidereal day, you got to wonder if the value of 16 hours, 6 minutes and 36 seconds is really accurate to the fraction of a second. It turns out that since Neptune is a gas giant, the rotation period depends on which part of the planet you are talking about. The "surface" that we can see is the tops of clouds. It rotates in anything from 12 to 21 hours. The magnetic field of Neptune comes the interior; this field rotates in 16 hours and 6 minutes 36 seconds. I haven't been able to find a value for how accurate this measurement is. It was measured by Voyager 2 in 1989.

Answer 3

Because Neptune is not a solid body, its atmosphere undergoes differential rotation. The wide equatorial zone rotates with a period of about 18 hours, at the polar regions the rotation period is 12 hours. Its magnetic field rotates in 16H 6 MIN 36 SEC. Its orbit around the sun (Neptunian Year) is 60,190 earth days or about 164.79 earth years.

Answer 4

The rotational period of Neptune's magnetic field is about 16.11 hours. The gaseous surface at the equator rotates in about 18 hours.

Answer 5

The period of rotation of Neptune is 16.1 Earth hours. This is equal to about two thirds of an Earth Day.

Answer 6

it takes 165 earth years for Neptune to orbit the sun so therefore no human could live through one neptune year.

Answer 7

0.67125 days.

Answer 8

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