Grand Orrery Model of the Solar System
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The Grand Orrery model of the solar system shows the correct relative orbital speeds of the planets as well as the relative orbital motion of Earth's moon. Historically, a Grand Orrery only showed the "naked eye" planets up to Saturn, as they were developed in the early 1700s.
Our model demonstrates 9 planets, including Pluto, and 28 moons. Earth's moon system shows the compound motion of the moon's orbit around Earth, while Earth orbits the sun.
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 moons are also available for special order. Operation is BATTERY powered unless otherwise specified in preferences.
The mechanism is fully visible beneath the orbiting planets and is a fascinating display of moving solid brass gears.
In fine woodworking, a dodecagonal oak base housing, placed on 12 solid brass feet, elegantly presents the Grand Orrery.
