lagrange-points

Install via npm

$ npm install lagrange-points

Usage

var Lagrange = require( 'lagrange-points' )

// Masses is kg
var moon = 7.3477 * 1e22
var earth = 5.97219 * 1e24
// Distance in km
var distance = 384399

var params = Lagrange.getParameters( earth, moon, distance )

Result:

{
  distance: 384399,
  massRatio: 81.27972018454756,
  barycenter: 4671.85594625043,
  x1: 58023.627116674485,
  x2: 64520.474068579846,
  x3: 174776.59760000271,
  h: 38380.30836459083,
  z: 382084.4941699412,
  r: 4.144102486825536
}