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Planet rotation speed

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McLean 1, 7 What would the characteristics of this planet such as mass, radius etc. Rotation Time in astronomy. Sign up using Email and Password. If a planet aquired a large moon the moons size, orbital period and direction could easily speed up or slow down a planets rotation by a large margin over a long enough period. For instance, Mars' day is about the same length as Earth, while a day on Venus is equivalent to Earth days source. What determines the length of a day on a planet?

  • Why and how do planets rotate Scientific American
  • Orbital Speed of Planets in Order Rotational Speed Comparison
  • astronomy What determines the length of a day on a planet Worldbuilding Stack Exchange

  • Rotation speed at the equator and Mean orbital velocity around Sun ofMercury, Venus,Earth,Mars,Jupiter,Saturn,Uranus,Neptune,Pluto. In astronomy, the rotation period of a celestial object is the time that it takes to complete one revolution around its axis of rotation relative to the background stars.

    images planet rotation speed

    It differs from the planet's solar day, which includes an extra fractional rotation. of astronomical bodies · Retrograde motion · Rotational speed · Synodic day.

    Video: Planet rotation speed Solar System Model (Accurate Speed Animation)

    ROTATION AS A FUNCTION OF GRAVITY———————— The approach is to find an equation (with minimum number of variables [Occam's razor / "law of.
    In addition, they all rotate in the same general direction, with the exceptions of Venus and Uranus. McLean 1, 7 It differs from the planet's solar day, which includes an extra fractional rotation needed to accommodate the portion of the planet's orbital period during one day.

    Worldbuilding Stack Exchange works best with JavaScript enabled. Although you didn't say it, I also assume that you want a planet in the habitable zone otherwise you've got much more freedom in your choices. After that, the rotational speed is reduced by tidal forces due to the inhomogeneity of the gravitational field of other bodies.

    The sun itself rotates slowly, only once a month.

    Why and how do planets rotate Scientific American

    images planet rotation speed
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    Of course an old planet implies an old star, that is a long-lived one, so we are again back at the requirement at a small star.

    Views Read Edit View history. The length of a day on different planets in the solar system varies a lot. During the night, constant darkness would send the temperature plummiting. For objects that are not spherically symmetricalthe rotation period is, in general, not fixed, even in the absence of gravitational or tidal forces.

    For instance, Mars' day is about the same length as Earth, while a day on Venus is equivalent to Earth days source.

    images planet rotation speed

    It's because most satellite in the solar system are tidal locked.

    Planetary Fact Sheet - Metric Rotation Period (hours),,,Length of Day (hours). The orbital speeds of the planets vary depending on their distance from the sun. This is because of the gravitational force being exerted on the planets by the.

    It is believed that the long rotational period of these planets is. The speed a planet rotate depends on the angular momentum it has after.
    The rotating clouds flatten into protostellar disks, out of which individual stars and their planets form.

    The most extreme case is when the planet is tidally locked to the star, so that the sidereal day is exactly the same length as a year; then the solar day is infinite the sun always sits on the same place. George Spagna, chair of the physics department at Randolph-Macon College, explains. Please help by spinning off or relocating any relevant information, and removing excessive detail that may be against Wikipedia's inclusion policy.

    These differences are believed to stem from collisions that occurred late in the planets' formation. Basically the solar day is the sidereal day rotation period of the planet times one plus or minus sign depending on the rotational direction of the planet relative to its revolution the inverse of the number of days in the year.

    It is believed that the long rotational period of these planets is caused by different but related mechanisms - tidal locking for Venus gravity interacting with it's thick atmosphere and gravitational locking on Mercury being closest to the sun.

    images planet rotation speed
    Planet rotation speed
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    I assume you mean the solar day determined e. Planets form from material in this disk, through accretion of smaller particles. Sign up using Facebook.

    Orbital Speed of Planets in Order Rotational Speed Comparison

    JessWelch 1 4 This page was last edited on 7 Octoberat Sign up or log in Sign up using Google.

    Rotational speeds of planets cannot be calculated/predicted because planet formation seems to be highly chaotic. The spin of planets (both. Since Jupiter is a gas planet, it does not rotate as a solid sphere. Jupiter's equator rotates a bit faster than its polar regions at a speed of 28, miles/hour.

    Stars and planets form in the collapse of huge clouds of interstellar gas and dust. As her arms come closer to her axis of rotation, her speed increases and her.
    What determines the length of a day on a particular planet?

    astronomy What determines the length of a day on a planet Worldbuilding Stack Exchange

    By clicking "Post Your Answer", you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Plants especially could suffer from prolonged absence from the sun. In our solar system, the giant gas planets Jupiter, Saturn, Uranus, and Neptune spin more rapidly on their axes than the inner planets do and possess most of the system's angular momentum.

    The speed a planet rotate depends on the angular momentum it has after forming. These tables were used to calculate the world's ephemerides between andso this second became known as the ephemeris second. Inserting the previous estimation of the planet's distance as function of the stellar mass, you get.

    images planet rotation speed
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    A similar collision is believed to have led to the formation of our moon.

    However, the star is not the only source of tidal forces; indeed, on earth the biggest tidal forces don't come from the sun, but from the moon.

    images planet rotation speed

    As an interstellar cloud collapses, it fragments into smaller pieces, each collapsing independently and each carrying part of the original angular momentum. To have a maximal effect on the day length, you want the year as short as possible, that is you want to have a small star ideally a red dwarfand you want your planet on the inner edge of the habitable zone.

    Video: Planet rotation speed Speed of Earth's Rotation

    By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Titanfor example has an orbital period of just under 16 days, which is close to the value that you specified. The material in these clouds is in constant motion, and the clouds themselves are in motion, orbiting in the aggregate gravity of the galaxy.

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    1. Durg:

      The material in these clouds is in constant motion, and the clouds themselves are in motion, orbiting in the aggregate gravity of the galaxy. Of course the moon should be sufficiently far away that its revolution period is slower than the planet's day, as if it is faster, you'll get the opposite effect: