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The mass of the Sun and the distance between the planet and Sun.

As the Sun's mass is (more or less) constant, all we need to know is the distance. Technically this is called the "semi major axis" of the elliptical orbit.

(If you wanted to be really, really accurate the mass of the planet does have a

very very small effect.)

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Q: Orbital speed is the speed with which a planet moves around the Sun This speed is determined by?
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Which planet moves the slowest in its orbit?

Orbital speed is determined by the mass of the body and the distance from the sun. Given its extreme distance, Pluto has the slowest orbit. However, Pluto is no longer considered a planet, but instead a planetoid. Therefore Neptune now has the slowest orbit.


What is orbitical velocity?

The planet Mercury has an orbital velocity of 47.8725 kilometers/second. It revolves around the Sun once every 88 days at about 172,332 kph or 107,082 mph.


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A planet's orbital speed changes, depending on how far it is from the Sun. The closer a planet is to the Sun, the stronger the Sun's gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun's gravitational pull, and the slower it moves in its orbit.


Why are the lenghts of the years on the other planets different?

The length of a planet's year is the time it takes to complete one orbit around the Sun. The closer a planet is to the Sun the shorter its year. There are 2 reasons for that: 1) The planet's orbital path is shorter. 2) The nearer a planet is to the Sun, the faster it moves in its orbit.


What is a large object that moves around a star?

a planet DA


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What is an orbital jigsaw?

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Which planet moves the most slowly in its orbit?

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