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JavaScript library to get Positions for Astronomical Bodies, including VSOP2013, VSOP2010, VSOP87, TOP2013, TOP2010, ELP2000-MPP02, ELP2000-82b, EPHASTER ephemerides and some home-grown ones (mgstat2023). Optimized for speed and size.
Sun–Moon ephemeris, eclipse prediction and lunar observation in a single HTML file (VSOP2013, ELP/MPP02, IAU 2006/2000A, IERS EOP). Offline-capable, installable PWA.
纯 Dart 天文与历法库:天体位置、节气月相、日月食、恒星、农历与太阳时,无运行时依赖。Pure Dart astronomy and calendar library: celestial positions, solar terms, moon phases, eclipses, fixed stars, Chinese calendars and solar time. No runtime dependencies.