public Orbit(double daysForRevolution, Ecliptic ecliptic, SpatialAngle up, double startAngle)
{
DaysForRevolution = daysForRevolution;
Ecliptic = ecliptic;
Up = up;
StartAngle = startAngle;
}
public Orbit()
{
DaysForRevolution = 1;
Ecliptic = new Ecliptic(0, 0);
Up = new SpatialAngle(0, 0);
StartAngle = 0;
}