GitHub - lizard-isana/orb.js: JavaScript Library for Astronomical Calculations

var date = new Date(); // Position of planets var mars = new Orb.VSOP("Mars"); var xyz = mars.xyz(date); // ecliptic rectangular coordinates(x, y, z) var radec = mars.radec(date); // equatorial spherical coordinates(ra, dec, distance) // Position of the moon var luna = new Orb.Luna(); var xyz = luna.xyz(date); // Earth centered ecliptic rectangular coordinates (x, y, z) var radec = luna.radec(date

[Nemisama]

軌道要素から現在地の計算