The Grand Orrery model of the solar system depicts the correct relative orbital speeds of the planets plus relative orbital movement of Earth’s moon. Historically, a Grand Orrery showed only the "naked eye" planets out to Saturn, as they were developed in the early 18th century.
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Our model demonstrates 9 planets, including Pluto, and 28 moons. The Earth's moon system shows the compound motion of the moon's orbit around the Earth, while the Earth orbits the Sun.
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Mercury orbits 1028 times for every orbit of Pluto. Mercury takes about 4 seconds to orbit while Pluto takes about 4 hours.
The Sun, 9 planets and 28 moons are made of beautiful semi-precious stone spheres. Brass planets with stone moon is also available for special order only. Operation is BATTERY unless noted in preferences.
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The mechanism is fully visible under the orbiting planet and is a fascinating display of moving solid brass gears.
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In fine woodwork, a twelve sided oak barrel housing, seated upon 12 solid brass feet, elegantly presents the Grand Orrery.
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-An engraved brass calendar/zodiacal ring rests on 12 brass pillars which together sit above the oak barrel.
-Around the moving planets and above the calendar ring sits a removable solid brass armillary half-sphere beautifully crowning the Grand Orrery.
Product parameter
**Tower Orrery
Material: medium: brass, stone, wood
Height: 7 inches
Width: 5 inches
Depth: 5 inches
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