longTermMeanObliquity function

double longTermMeanObliquity(
  1. double t
)

Mean obliquity of the ecliptic of date (radians): the angle between the long-term mean equator and ecliptic poles.

Implementation

double longTermMeanObliquity(double t) {
  final (n, k) = _poles(t);
  return math.atan2(n.cross(k).length, n.dot(k));
}