The Jovilabe — wichaa A working jovilabe: Jupiter's four great moons in their orbits to true scale, their eclipses, transits and occultations, Rømer's light equation, the Laplace resonance, and the wheelwork that would drive the whole thing. wichaa.net/jovilabe/ · 21-Sep-2026 · 419K
ตำแหน่งโดยประมาณจากเครือข่าย (Columbus) · your network's rough position