Period of rotation

PERIOD OF ROTATION The period of rotation of an orbiting body is the time it takes for it to make one rotation around its axis. The period of rotation for the Earth is one day.

Pluto's period of rotation is 6.4 days, which is the same as its moon Charon.

What is the period of rotation for Uranus and Neptune? What is the period of rotation for Jupiter and Saturn? Which planet is smallest? Which planet is largest? Which planet is furthest from the sun? Which planet is closest to the sun ...

* The Sun's period of rotation at the surface varies from approximately 25 days at the equator to 36 days at the poles. Deep down, below the convective zone, everything appears to rotate with a period of 27 days. Travel to the Sun ...

Because of the precession of the equinoxes, the sidereal day thus defined is slightly less than the period of rotation with respect to the stars, but the difference is less than 0.01 second.

It was long thought that Mercury's period of rotation on its axis was identical to its period of revolution, so that the same side of the planet always faced the sun. However, radar studies in 1965 showed a period of rotation of 58.6 days.

Based on the movements of Saturnian storm clouds, the period of rotation of the atmosphere near the equator is about 10 hr 11 min.

Note: The text above--and sections that follow--gives the period of rotation of the Earth as 24 hours. That is not exactly true: 24 hours is the mean length of a solar day, the average time that passes from noon to the next noon.

Period of rotation: 27.3 Earth days Period of orbit around Earth: 27.3 Earth days Length of phase cycle: 29.5 Earth days Mass: 7.35 x 10 ^ 22 kg Range of surface temperatures: -170 deg C to 134 deg C (-62.4 deg F to 106.4 deg F) ...

Sol: A local day on a planet, defined by its period of rotation. On Mars, for example, a local day lasts 24 hours and 37 minutes.

Recent estimates are that the period of rotation around the Galaxy's Core range from about 227 to 240 million years. Your text favors the longer period. Try using those values in the Javascript form below to determine the mass of the Galaxy.

Uranus also has a short period of rotation, just above 17 hours, which has flattened the planet considerably, making it more elliptical than most planets. The equatorial circumference is about 2.4 % greater than the polar circumference.

Due to the fact that the Moon's period of rotation and revolution are the same, we always see the same side of the Moon from Earth. Return to the StarChild Main Page Go to Imagine the Universe! (A site for ages 14 and up.) ...

No asteroid with a diameter larger than 100 metres has a period of rotation of less than 2.2 hours.

A period of rotation of a satellite about its axis that is the same as the period of its orbit around its primary. This causes the satellite to always keep the same face to the primary. Our Moon in in synchronous rotation about the Earth.

Synchronous Rotation - Rotation for which the period of rotation is equal to the period of revolution. An example of synchronous rotation is the Moon, for which the period of rotation and the period of revolution about the Earth are both 1 month ...

synchronous orbit State of an object when its period of rotation is exactly equal to its average orbital period. The Moon is in synchronous orbit, and so presents the same face toward Earth at all times.

42 hours (half of the Moon's synodic period of rotation), which is considerably less than the natural period of the oceans, complex resonance phenomena take place.

A satellite is in synchronous orbit (also called synchronous rotation) when its orbital period is the same as its period of rotation about its axis. The is in a synchronous orbit, so the same side of the moon always faces .

This is because we define a day not based on the Earth's period of rotation, but based on the average time from noon one day to noon the next.

When Sedna was discovered, astronomers used a 1.3-metre telescope to observe the planetoid's period of rotation, concluding it rotated once every 20 days - an abnormally slow rate which they attributed to the gravitational tugs of a moon.

This idea gained support from the apparent similarity of the dimensions of Pluto and Triton and the near coincidence in Triton's period of revolution (5.9 days) and Pluto's period of rotation (6.4 days).

The entire structure rotates with a period of 10h 39 m 24s, the same period as that of the planet's radio emissions, which is assumed to be equal to the period of rotation of Saturn's interior.

Deimos, being only just outside synchronous orbit-where the orbital period would match the planet's period of rotation - rises as expected in the east but very slowly. Despite the 30 hour orbit of Deimos, it takes 2.

The length of time (23h56m4s.091) between two successive meridian transits of the vernal equinox (cf. mean solar day). Because of precession the sidereal day is about 0.0084 second shorter than the period of rotation of Earth relative to a fixed ...

ephemeris ~: [ET] "scientific time" - used between 1960 and 1983, this uniform timescale was based on the ephemeris second, itself derived from the period of rotation of the Earth at a particular date.

As a consequence of the tidal interactions with the Moon, the Earth's rotational period is slowly decreasing . Billions of years from now, the Earth and the Moon will have the same period of rotation, ...

See also: Period, Earth, Sun, Rotation, Distance