Ejemplo n.º 1
0
//C++ TO C# CONVERTER WARNING: 'const' methods are not available in C#:
//ORIGINAL LINE: void Get(int& Year, int& Month, int& Day, int& Hour, int& Minute, double& Second) const
    public void Get(ref int Year, ref int Month, ref int Day, ref int Hour, ref int Minute, ref double Second)
    {
        double JD    = m_dblJulian + 0.5;
        double tempZ = 0;
        double F     = GlobalMembersStdafx.modf(JD, ref tempZ);
        int    Z     = (int)(tempZ);
        int    A;

        if (m_bGregorianCalendar) //There is a difference here between the Meeus implementation and this one
        //if (Z >= 2299161)       //The Meeus implementation automatically assumes the Gregorian Calendar
        //came into effect on 15 October 1582 (JD: 2299161), while the CAADate
        //implementation has a "m_bGregorianCalendar" value to decide if the date
        //was specified in the Gregorian or Julian Calendars. This difference
        //means in effect that CAADate fully supports a propalactive version of the
        //Julian calendar. This allows you to construct Julian dates after the Papal
        //reform in 1582. This is useful if you want to construct dates in countries
        //which did not immediately adapt the Gregorian calendar
        {
            int alpha = (int)((Z - 1867216.25) / 36524.25);
            A = Z + 1 + alpha - (int)((int)alpha / 4.0);
        }
        else
        {
            A = Z;
        }

        int B = A + 1524;
        int C = (int)((B - 122.1) / 365.25);
        int D = (int)(365.25 * C);
        int E = (int)((B - D) / 30.6001);

        double dblDay = B - D - (int)(30.6001 * E) + F;

        Day = (int)(dblDay);

        if (E < 14)
        {
            Month = E - 1;
        }
        else
        {
            Month = E - 13;
        }

        if (Month > 2)
        {
            Year = C - 4716;
        }
        else
        {
            Year = C - 4715;
        }

        F      = GlobalMembersStdafx.modf(dblDay, ref tempZ);
        Hour   = (int)(F * 24);
        Minute = (int)((F - (Hour) / 24.0) * 1440.0);
        Second = (F - (Hour / 24.0) - (Minute / 1440.0)) * 86400.0;
    }
    //Static methods
    public static CAASolarEclipseDetails CalculateSolar(double k)
    {
#if _DEBUG
        double intp          = 0;
        bool   bSolarEclipse = (GlobalMembersStdafx.modf(k, ref intp) == 0);
        Debug.Assert(bSolarEclipse);
#endif

        double Mdash = 0;
        return(Calculate(k, ref Mdash));
    }
    public static CAALunarEclipseDetails CalculateLunar(double k)
    {
#if _DEBUG
        double intp          = 0;
        bool   bSolarEclipse = (GlobalMembersStdafx.modf(k, ref intp) == 0);
        Debug.Assert(!bSolarEclipse);
#endif

        double Mdash = 0;
        CAASolarEclipseDetails solarDetails = Calculate(k, ref Mdash);

        //What will be the return value
        CAALunarEclipseDetails details = new CAALunarEclipseDetails();
        details.bEclipse             = solarDetails.bEclipse;
        details.F                    = solarDetails.F;
        details.gamma                = solarDetails.gamma;
        details.TimeOfMaximumEclipse = solarDetails.TimeOfMaximumEclipse;
        details.u                    = solarDetails.u;

        if (details.bEclipse)
        {
            details.PenumbralRadii = 1.2848 + details.u;
            details.UmbralRadii    = 0.7403 - details.u;
            double fgamma = Math.Abs(details.gamma);
            details.PenumbralMagnitude = (1.5573 + details.u - fgamma) / 0.5450;
            details.UmbralMagnitude    = (1.0128 - details.u - fgamma) / 0.5450;

            double p = 1.0128 - details.u;
            double t = 0.4678 - details.u;
            double n = 0.5458 + 0.0400 * Math.Cos(Mdash);

            double gamma2 = details.gamma * details.gamma;
            double p2     = p * p;
            if (p2 >= gamma2)
            {
                details.PartialPhaseSemiDuration = 60 / n * Math.Sqrt(p2 - gamma2);
            }

            double t2 = t * t;
            if (t2 >= gamma2)
            {
                details.TotalPhaseSemiDuration = 60 / n * Math.Sqrt(t2 - gamma2);
            }

            double h  = 1.5573 + details.u;
            double h2 = h * h;
            if (h2 >= gamma2)
            {
                details.PartialPhasePenumbraSemiDuration = 60 / n * Math.Sqrt(h2 - gamma2);
            }
        }

        return(details);
    }
Ejemplo n.º 4
0
    public static double TruePhase(double k)
    {
        //What will be the return value
        double JD = MeanPhase(k);

        //convert from K to T
        double T  = k / 1236.85;
        double T2 = T * T;
        double T3 = T2 * T;
        double T4 = T3 * T;

        double E  = 1 - 0.002516 * T - 0.0000074 * T2;
        double E2 = E * E;

        double M = CAACoordinateTransformation.MapTo0To360Range(2.5534 + 29.10535670 * k - 0.0000014 * T2 - 0.00000011 * T3);

        M = CAACoordinateTransformation.DegreesToRadians(M);
        double Mdash = CAACoordinateTransformation.MapTo0To360Range(201.5643 + 385.81693528 * k + 0.0107582 * T2 + 0.00001238 * T3 - 0.000000058 * T4);

        Mdash = CAACoordinateTransformation.DegreesToRadians(Mdash);
        double F = CAACoordinateTransformation.MapTo0To360Range(160.7108 + 390.67050284 * k - 0.0016118 * T2 - 0.00000227 * T3 + 0.00000001 * T4);

        F = CAACoordinateTransformation.DegreesToRadians(F);
        double omega = CAACoordinateTransformation.MapTo0To360Range(124.7746 - 1.56375588 * k + 0.0020672 * T2 + 0.00000215 * T3);

        omega = CAACoordinateTransformation.DegreesToRadians(omega);
        double A1 = CAACoordinateTransformation.MapTo0To360Range(299.77 + 0.107408 * k - 0.009173 * T2);

        A1 = CAACoordinateTransformation.DegreesToRadians(A1);
        double A2 = CAACoordinateTransformation.MapTo0To360Range(251.88 + 0.016321 * k);

        A2 = CAACoordinateTransformation.DegreesToRadians(A2);
        double A3 = CAACoordinateTransformation.MapTo0To360Range(251.83 + 26.651886 * k);

        A3 = CAACoordinateTransformation.DegreesToRadians(A3);
        double A4 = CAACoordinateTransformation.MapTo0To360Range(349.42 + 36.412478 * k);

        A4 = CAACoordinateTransformation.DegreesToRadians(A4);
        double A5 = CAACoordinateTransformation.MapTo0To360Range(84.66 + 18.206239 * k);

        A5 = CAACoordinateTransformation.DegreesToRadians(A5);
        double A6 = CAACoordinateTransformation.MapTo0To360Range(141.74 + 53.303771 * k);

        A6 = CAACoordinateTransformation.DegreesToRadians(A6);
        double A7 = CAACoordinateTransformation.MapTo0To360Range(207.14 + 2.453732 * k);

        A7 = CAACoordinateTransformation.DegreesToRadians(A7);
        double A8 = CAACoordinateTransformation.MapTo0To360Range(154.84 + 7.306860 * k);

        A8 = CAACoordinateTransformation.DegreesToRadians(A8);
        double A9 = CAACoordinateTransformation.MapTo0To360Range(34.52 + 27.261239 * k);

        A9 = CAACoordinateTransformation.DegreesToRadians(A9);
        double A10 = CAACoordinateTransformation.MapTo0To360Range(207.19 + 0.121824 * k);

        A10 = CAACoordinateTransformation.DegreesToRadians(A10);
        double A11 = CAACoordinateTransformation.MapTo0To360Range(291.34 + 1.844379 * k);

        A11 = CAACoordinateTransformation.DegreesToRadians(A11);
        double A12 = CAACoordinateTransformation.MapTo0To360Range(161.72 + 24.198154 * k);

        A12 = CAACoordinateTransformation.DegreesToRadians(A12);
        double A13 = CAACoordinateTransformation.MapTo0To360Range(239.56 + 25.513099 * k);

        A13 = CAACoordinateTransformation.DegreesToRadians(A13);
        double A14 = CAACoordinateTransformation.MapTo0To360Range(331.55 + 3.592518 * k);

        A14 = CAACoordinateTransformation.DegreesToRadians(A14);

        //convert to radians
        double kint  = 0;
        double kfrac = GlobalMembersStdafx.modf(k, ref kint);

        if (kfrac < 0)
        {
            kfrac = 1 + kfrac;
        }
        if (kfrac == 0) //New Moon
        {
            double DeltaJD = -0.40720 * Math.Sin(Mdash) + 0.17241 * E * Math.Sin(M) + 0.01608 * Math.Sin(2 * Mdash) + 0.01039 * Math.Sin(2 * F) + 0.00739 * E * Math.Sin(Mdash - M) + -0.00514 * E * Math.Sin(Mdash + M) + 0.00208 * E2 * Math.Sin(2 * M) + -0.00111 * Math.Sin(Mdash - 2 * F) + -0.00057 * Math.Sin(Mdash + 2 * F) + 0.00056 * E * Math.Sin(2 * Mdash + M) + -0.00042 * Math.Sin(3 * Mdash) + 0.00042 * E * Math.Sin(M + 2 * F) + 0.00038 * E * Math.Sin(M - 2 * F) + -0.00024 * E * Math.Sin(2 * Mdash - M) + -0.00017 * Math.Sin(omega) + -0.00007 * Math.Sin(Mdash + 2 * M) + 0.00004 * Math.Sin(2 * Mdash - 2 * F) + 0.00004 * Math.Sin(3 * M) + 0.00003 * Math.Sin(Mdash + M - 2 * F) + 0.00003 * Math.Sin(2 * Mdash + 2 * F) + -0.00003 * Math.Sin(Mdash + M + 2 * F) + 0.00003 * Math.Sin(Mdash - M + 2 * F) + -0.00002 * Math.Sin(Mdash - M - 2 * F) + -0.00002 * Math.Sin(3 * Mdash + M) + 0.00002 * Math.Sin(4 * Mdash);
            JD += DeltaJD;
        }
        else if ((kfrac == 0.25) || (kfrac == 0.75)) //First Quarter or Last Quarter
        {
            double DeltaJD = -0.62801 * Math.Sin(Mdash) + 0.17172 * E * Math.Sin(M) + -0.01183 * E * Math.Sin(Mdash + M) + 0.00862 * Math.Sin(2 * Mdash) + 0.00804 * Math.Sin(2 * F) + 0.00454 * E * Math.Sin(Mdash - M) + 0.00204 * E2 * Math.Sin(2 * M) + -0.00180 * Math.Sin(Mdash - 2 * F) + -0.00070 * Math.Sin(Mdash + 2 * F) + -0.00040 * Math.Sin(3 * Mdash) + -0.00034 * E * Math.Sin(2 * Mdash - M) + 0.00032 * E * Math.Sin(M + 2 * F) + 0.00032 * E * Math.Sin(M - 2 * F) + -0.00028 * E2 * Math.Sin(Mdash + 2 * M) + 0.00027 * E * Math.Sin(2 * Mdash + M) + -0.00017 * Math.Sin(omega) + -0.00005 * Math.Sin(Mdash - M - 2 * F) + 0.00004 * Math.Sin(2 * Mdash + 2 * F) + -0.00004 * Math.Sin(Mdash + M + 2 * F) + 0.00004 * Math.Sin(Mdash - 2 * M) + 0.00003 * Math.Sin(Mdash + M - 2 * F) + 0.00003 * Math.Sin(3 * M) + 0.00002 * Math.Sin(2 * Mdash - 2 * F) + 0.00002 * Math.Sin(Mdash - M + 2 * F) + -0.00002 * Math.Sin(3 * Mdash + M);
            JD += DeltaJD;

            double W = 0.00306 - 0.00038 * E * Math.Cos(M) + 0.00026 * Math.Cos(Mdash) - 0.00002 * Math.Cos(Mdash - M) + 0.00002 * Math.Cos(Mdash + M) + 0.00002 * Math.Cos(2 * F);
            if (kfrac == 0.25) //First quarter
            {
                JD += W;
            }
            else
            {
                JD -= W;
            }
        }
        else if (kfrac == 0.5) //Full Moon
        {
            double DeltaJD = -0.40614 * Math.Sin(Mdash) + 0.17302 * E * Math.Sin(M) + 0.01614 * Math.Sin(2 * Mdash) + 0.01043 * Math.Sin(2 * F) + 0.00734 * E * Math.Sin(Mdash - M) + -0.00514 * E * Math.Sin(Mdash + M) + 0.00209 * E2 * Math.Sin(2 * M) + -0.00111 * Math.Sin(Mdash - 2 * F) + -0.00057 * Math.Sin(Mdash + 2 * F) + 0.00056 * E * Math.Sin(2 * Mdash + M) + -0.00042 * Math.Sin(3 * Mdash) + 0.00042 * E * Math.Sin(M + 2 * F) + 0.00038 * E * Math.Sin(M - 2 * F) + -0.00024 * E * Math.Sin(2 * Mdash - M) + -0.00017 * Math.Sin(omega) + -0.00007 * Math.Sin(Mdash + 2 * M) + 0.00004 * Math.Sin(2 * Mdash - 2 * F) + 0.00004 * Math.Sin(3 * M) + 0.00003 * Math.Sin(Mdash + M - 2 * F) + 0.00003 * Math.Sin(2 * Mdash + 2 * F) + -0.00003 * Math.Sin(Mdash + M + 2 * F) + 0.00003 * Math.Sin(Mdash - M + 2 * F) + -0.00002 * Math.Sin(Mdash - M - 2 * F) + -0.00002 * Math.Sin(3 * Mdash + M) + 0.00002 * Math.Sin(4 * Mdash);
            JD += DeltaJD;
        }
        else
        {
            Debug.Assert(false);
        }

        //Additional corrections for all phases
        double DeltaJD2 = 0.000325 * Math.Sin(A1) + 0.000165 * Math.Sin(A2) + 0.000164 * Math.Sin(A3) + 0.000126 * Math.Sin(A4) + 0.000110 * Math.Sin(A5) + 0.000062 * Math.Sin(A6) + 0.000060 * Math.Sin(A7) + 0.000056 * Math.Sin(A8) + 0.000047 * Math.Sin(A9) + 0.000042 * Math.Sin(A10) + 0.000040 * Math.Sin(A11) + 0.000037 * Math.Sin(A12) + 0.000035 * Math.Sin(A13) + 0.000023 * Math.Sin(A14);

        JD += DeltaJD2;

        return(JD);
    }
Ejemplo n.º 5
0
    //Tangible Process Only End


    //////////////////////////// Implementation ///////////////////////////////////

    protected static CAASolarEclipseDetails Calculate(double k, ref double Mdash)
    {
        //Are we looking for a solar or lunar eclipse
        double intp          = 0;
        bool   bSolarEclipse = (GlobalMembersStdafx.modf(k, ref intp) == 0);

        //What will be the return value
        CAASolarEclipseDetails details = new CAASolarEclipseDetails();

        //convert from K to T
        double T  = k / 1236.85;
        double T2 = T * T;
        double T3 = T2 * T;
        double T4 = T3 * T;

        double E = 1 - 0.002516 * T - 0.0000074 * T2;

        double M = CAACoordinateTransformation.MapTo0To360Range(2.5534 + 29.10535670 * k - 0.0000014 * T2 - 0.00000011 * T3);

        M = CAACoordinateTransformation.DegreesToRadians(M);

        Mdash = CAACoordinateTransformation.MapTo0To360Range(201.5643 + 385.81693528 * k + 0.0107582 * T2 + 0.00001238 * T3 - 0.000000058 * T4);
        Mdash = CAACoordinateTransformation.DegreesToRadians(Mdash);

        double omega = CAACoordinateTransformation.MapTo0To360Range(124.7746 - 1.56375588 * k + 0.0020672 * T2 + 0.00000215 * T3);

        omega = CAACoordinateTransformation.DegreesToRadians(omega);

        double F = CAACoordinateTransformation.MapTo0To360Range(160.7108 + 390.67050284 * k - 0.0016118 * T2 - 0.00000227 * T3 + 0.00000001 * T4);

        details.F = F;
        double Fdash = F - 0.02665 * Math.Sin(omega);

        F     = CAACoordinateTransformation.DegreesToRadians(F);
        Fdash = CAACoordinateTransformation.DegreesToRadians(Fdash);

        //Do the first check to see if we have an eclipse
        if (Math.Abs(Math.Sin(F)) > 0.36)
        {
            return(details);
        }

        double A1 = CAACoordinateTransformation.MapTo0To360Range(299.77 + 0.107408 * k - 0.009173 * T2);

        A1 = CAACoordinateTransformation.DegreesToRadians(A1);

        details.TimeOfMaximumEclipse = CAAMoonPhases.MeanPhase(k);

        double DeltaJD = 0;

        if (bSolarEclipse)
        {
            DeltaJD += -0.4075 * Math.Sin(Mdash) + 0.1721 * E * Math.Sin(M);
        }
        else
        {
            DeltaJD += -0.4065 * Math.Sin(Mdash) + 0.1727 * E * Math.Sin(M);
        }
        DeltaJD += 0.0161 * Math.Sin(2 * Mdash) + -0.0097 * Math.Sin(2 * Fdash) + 0.0073 * E * Math.Sin(Mdash - M) + -0.0050 * E * Math.Sin(Mdash + M) + -0.0023 * Math.Sin(Mdash - 2 * Fdash) + 0.0021 * E * Math.Sin(2 * M) + 0.0012 * Math.Sin(Mdash + 2 * Fdash) + 0.0006 * E * Math.Sin(2 * Mdash + M) + -0.0004 * Math.Sin(3 * Mdash) + -0.0003 * E * Math.Sin(M + 2 * Fdash) + 0.0003 * Math.Sin(A1) + -0.0002 * E * Math.Sin(M - 2 * Fdash) + -0.0002 * E * Math.Sin(2 * Mdash - M) + -0.0002 * Math.Sin(omega);

        details.TimeOfMaximumEclipse += DeltaJD;

        double P = 0.2070 * E * Math.Sin(M) + 0.0024 * E * Math.Sin(2 * M) + -0.0392 * Math.Sin(Mdash) + 0.0116 * Math.Sin(2 * Mdash) + -0.0073 * E * Math.Sin(Mdash + M) + 0.0067 * E * Math.Sin(Mdash - M) + 0.0118 * Math.Sin(2 * Fdash);

        double Q = 5.2207 + -0.0048 * E * Math.Cos(M) + 0.0020 * E * Math.Cos(2 * M) + -0.3299 * Math.Cos(Mdash) + -0.0060 * E * Math.Cos(Mdash + M) + 0.0041 * E * Math.Cos(Mdash - M);

        double W = Math.Abs(Math.Cos(Fdash));

        details.gamma = (P * Math.Cos(Fdash) + Q * Math.Sin(Fdash)) * (1 - 0.0048 * W);

        details.u = 0.0059 + 0.0046 * E * Math.Cos(M) + -0.0182 * Math.Cos(Mdash) + 0.0004 * Math.Cos(2 * Mdash) + -0.0005 * Math.Cos(M + Mdash);

        //Check to see if the eclipse is visible from the Earth's surface
        if (Math.Abs(details.gamma) > (1.5433 + details.u))
        {
            return(details);
        }

        //We have an eclipse at this time
        details.bEclipse = true;

        //In the case of a partial eclipse, calculate its magnitude
        double fgamma = Math.Abs(details.gamma);

        if (((fgamma > 0.9972) && (fgamma < 1.5433 + details.u)))
        {
            details.GreatestMagnitude = (1.5433 + details.u - fgamma) / (0.5461 + 2 * details.u);
        }

        return(details);
    }