jupiter is the third brightest object in the night sky. its orbital period is 11.9 earth years. its...
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Jupiter is the third brightest object in the night sky.
Its orbital period is 11.9 Earth years.
Its semi-major axis is 5.20 A. U. (778,000,000 km).
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Jupiter is orbited by many moons. The four largest are called the Galilean Moons.
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Mass: 1.9 x 1030g (318 Earth masses)
This is more than twice the mass of all the other planets combined.Our solar system is a two object system with some debris.
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Radius: 71,400 km, 11.2 Earth radii. It would take 1400 Earths to equal Jupiter’s volume.
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Average Density: 1.3 g/cm3 (Earth’s is 5.5). This density is the result of Jupiter being composed primarily of hydrogen and helium.
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The different latitude zones rotate at different speeds. This is called differential rotation.
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The magnetosphere rotates at the same speed as the areas near the poles: 9 hr 56 min. This is the fastest rotation rate of any known solar system object.
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The equatorial regions rotate even faster: 9 hr and 50 min. This rapid spin rate causes Jupiter to be 6.5% fatter at the equator than at the poles. The term for this difference in diameter is oblateness.
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Jupiter is believed to have a small, dense, rocky core; about the size of the Earth itself.
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Jupiter has an axial tilt of only 3°, and its orbit is very nearly circular. There is very little seasonal change.
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Exploration:Jupiter was visited by Pioneer 10(1973) and Pioneer 11(1974) and Voyager 1 & 2(1979). Galileo visited in 1995.
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