earth
Earth
The planet with an orbital speed of around 30 kilometers per second is Earth. Its average orbital speed around the Sun is approximately 29.78 kilometers per second.
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.
Simplifying by assuming a circular orbit : Mercury travels 58 million kilometers (Mercury's average distance from the Sun) times 2 "pi", in 88 Earth days. In fact, the answer is about 47.9 kilometers per second, on average. Mercury has a markedly elliptical orbit, which means its speed varies quite a lot during its orbit.
Jupiter orbits the sun at an average speed of about 13.1 kilometers per second, taking about 11.86 Earth years to complete one orbit.
The orbital speed of Jupiter as it travels around the Sun is 13.07 kilometers per second. The average surface speed as it rotates is 12.6 kilometers per second.
Orbital velocity refers to the speed at which a planet travels in its orbit.
A satellite in a closed orbit has the greatest speed when it's closest to the planet, and the lowest speed when it's farthest from the planet.
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Kepler's Second Law: The planet moves faster when it is closer to the Sun.
The speed of the planet Uranus at every point in its orbit is lessthan the speed of the planet Jupiter at every point in its orbit.
An object in near-Earth orbit requires a speed of almost 8 kilometers per second to remain in orbit. At any lower speed, it will simply crash to Earth. - Also, pushing the satellite up to its orbit - 200 kilometers above the surface or something like that - requires additional energy.