Home▸Space & Astronomy▸English Orrery Simulator - 2D Plan View: Gear Train, Synodic Periods, Oppositions and Moon Phases

🪐 English Orrery Simulator - 2D Plan View: Gear Train, Synodic Periods, Oppositions and Moon Phases

Interactive 2D plan view of a brass orrery with its two-stage gear trains drawn live: compare gear arms with true Kepler positions, jump to oppositions and read synodic periods and the Moon phase.

Space & Astronomy2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

⚙ Under the hood

Interactive 2D plan view of a brass orrery with its two-stage gear trains drawn live: compare gear arms with true Kepler positions, jump to oppositions and read synodic periods and the Moon phase.

orrerygear trainsynodic periodoppositionKepler

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install