LEGO Orrery – Earth, Moon and Sun

A LEGO Orrery featuring the Earth, Moon and Sun. I tried to focus on making the rotation and movements as accurate as possible without making it too complex. It can be powered manually using the crank, or with a Power Functions M-Motor.

The relative sizes and distances between the objects is obviously not to scale, a concession often taken with these models. It’s also missing the tilt of the Earth and inclination of the Moon’s orbit. Perhaps some things that could be added in the future.

Building instructions and more information can be found on my website:

The software I used to create and animate the 3D model is LDCad, which is part of the LDraw system.

Malmo Sunrise – The 126ers

For sneak peeks and behind the scenes content you can follow me on these other sites.


Thanks for watching!




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Originally posted 2016-02-26 16:54:05. Republished by Blog Post Promoter

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24 thoughts on “LEGO Orrery – Earth, Moon and Sun

  1. Awesome model! It inspired me to make my own (definitely less elegant) orrery. However I discovered that there is a more accurate, simple gear ratio for years: 1/16*1/16*28/40 = 1/365.7143.

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