wgs72 top-level constant

Earth const wgs72

Implementation

const wgs72 = Earth._(
  radius: 6378.135,
  mu: 398600.8,
  j2: 0.0010826162,
  j3: -0.00000253881,
  j4: -0.00000165597,
  flattening: 1 / 298.26,
);