/// <summary>
/// Get the right ascension 'α'
/// </summary>
/// <param name="eclipticLatitude"></param>
/// <param name="eclipticLongitude"></param>
/// <param name="angle"></param>
/// <returns></returns>
public static double GetRightAscension(double eclipticLatitude, double eclipticLongitude, double angle)
{
return(DegreeHelper.RadiansToDegrees(Math.Atan2(
(MathDegrees.Sin(eclipticLongitude) * MathDegrees.Cos(angle)) -
(MathDegrees.Tan(eclipticLatitude) * MathDegrees.Sin(angle)),
MathDegrees.Cos(eclipticLongitude))));
}
/// <summary>
/// Get the ecliptic latitude 'β'
/// </summary>
/// <param name="model"></param>
/// <param name="largeDelta"></param>
/// <returns></returns>
public static double GetEclipticLatitude(this LocationModel model, double largeDelta)
{
return(DegreeHelper.RadiansToDegrees(Math.Asin(model.Z / largeDelta)));
}
/// <summary>
/// Get the declination δ
/// </summary>
/// <param name="eclipticLatitude"></param>
/// <param name="eclipticLongitude"></param>
/// <param name="angle"></param>
/// <returns></returns>
public static double GetDeclination(double eclipticLatitude, double eclipticLongitude, double angle)
{
return(DegreeHelper.RadiansToDegrees(Math.Asin(
(MathDegrees.Sin(eclipticLatitude) * MathDegrees.Cos(angle)) +
(MathDegrees.Cos(eclipticLatitude) * MathDegrees.Sin(angle) * MathDegrees.Sin(eclipticLongitude)))));
}
/// <summary>
/// Get the ecliptic longitude 'λ'
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
public static double GetEclipticLongitude(this LocationModel model)
{
return(DegreeHelper.RadiansToDegrees(Math.Atan2(model.Y, model.X)));
}