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What does the semimajor axis of a planet with a period of 12 earth years measure?
Wiki User
∙ 10y ago
That can be calculated from Kepler's 3rd law which says if the period is T years the semimajor axis must be T2/3 astronomical units. So for a period of 12 years the s/m axis is 5.421 AU or 784 million km.
Wiki User
∙ 10y ago
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What planet has twice the earth's period of revolution?
Mars has an orbital period of very approximately twice that of the earth
Which planet has 13 moons and has an orbital period of 60190 earth days?
Neptune has 13 known moons and an orbital period of about 60190 Earth days.
Which planet has a revolutionary period almost 30 times longer than that of earth?
Saturn.
Which planet's day is closest in length to its year?
Venus. The rotational (day) period is243.2 earth days, and the sidereal (year) period is 224.7 earth days, the only planet in our solar system that has a year that is shorter than a day.
How do Jupiter's density and period of rotation compare to Earth's?
Jupiter is less dense and has a shorter period of rotation.
How do Kepler's 3 laws of motion combined with the parts of an ellipse explain the amount of time it takes for a planet to orbit the sun based on its length?
One of the parts of an ellipse is the length of its major axis. Half that is called the semimajor axis. Kepler's 3rd law says that the time to do one orbit is proportional to the 3/2 power of the semimajor axis. IF the semimajor axis is one astronomical unit the period is one year (the Earth). For a planet with a semimajor axis of 4 AUs the period would have to be 8 years, by Kepler-3.
How do Keplers 3 laws of motion combined with the parts of an ellipse explain the amount of time it takes for a planet to orbit the sun based on its length?
One of the parts of an ellipse is the length of its major axis. Half that is called the semimajor axis. Kepler's 3rd law says that the time to do one orbit is proportional to the 3/2 power of the semimajor axis. IF the semimajor axis is one astronomical unit the period is one year (the Earth). For a planet with a semimajor axis of 4 AUs the period would have to be 8 years, by Kepler-3.
Why doesnt it take mercury as long as earth to complete one orbit around the sun?
Keppler's third law of planetary motion, his Law of Periods states that the square of the period of any planet is proportional to the cube of the semimajor axis of its orbit. This means that the nearer a planet is to the sun, the shorter its orbit. SInce Mercury is at a far smaller distance from the sun compared to the earth, its orbital period is smaller.
Which one of these planet completes its rotation in 59-60 Earth days venus mercury mars Jupiter?
Rotation means the planet spinning about it axis. (Orbit the the path of the planet round the Sun). The planet Mercury has a rotational period of 58.646 Earth days. The planet Venus has a (retrograde) rotational period of 243.0185 Earth days. The planet Mars has a rotational period of 1.025957 Earth days. The planet Jupiter has a rotational period of 9.925 hours. Obviously Earth has a rotational period of 1 Earth day.
What is period of rotation and revolution of Venus?
Venus' period of rotation is 243 Earth days. Its period of revolution is 224. 7 Earth days. The revolution period is the length of a year in Earth days on Venus. This planet is a terrestrial planet.
Which planet has twice the earth period of revolution?
Mars has roughly twice the Earth's period of revolution.
When will planet earth explode?
Never. Period.
What planet has twice the earth's period of revolution?
Mars has an orbital period of very approximately twice that of the earth
What unit is used to measure a planet?
Kilometers, kilograms or Earth masses and Earth radii.
What planet requires one earth year to rotate on its axis?
There is no such planet known. The planet with the longest rotation period is Venus. That rotates in about 243 Earth days.
Which planet orbit around the sun first?
Mercury is the closest planet to the Sun and has an orbital period of 88 Earth days. (Pluto in contrast has an orbital period of about 248 Earth years.)
Which planet has a revolutionary period almost 30 times longer than Earth?
The planet that has a revolutionary period almost 30 times longer than earth Saturn. It takes about 29.45 earth years to complete a revolution.
