C# (CSharp) CelestialComputation.CelestialBodies Earth Examples

Example #1

        public static double ApparentEclipticLongitude(double julianDate, bool highPrecision)
        {
            var longitude = ConvertLongitudeToFK5(julianDate, highPrecision)
                            + CoordinateTransformation.SetDMSToDegrees(0, 0, Nutation.NutationInLongitude(julianDate));

            var radius = Earth.GetSunRadiusVector(julianDate);

            return((highPrecision)
                ? longitude - (0.005775518 * radius * CoordinateTransformation.SetDMSToDegrees(0, 0, GetVariationEclipticLongitude(julianDate)))
                : longitude - CoordinateTransformation.SetDMSToDegrees(0, 0, 20.4898 / radius));
        }

Example #2

        public static double GetEclipticLongitude(double julianDate, bool highPrecision)
        {
            double earth = Earth.GetSunEclipticLongitude(julianDate, highPrecision);

            return(CoordinateTransformation.MapTo0To360Range(earth + 180));
        }

Example #3

 public static double GeometricEclipticLatitude(double julianDate) => - Earth.GetSunEclipticLatitude(julianDate);