function frac(x)
{
var a = x - Math.floor(x);
return a;
}
function Mod(a, b)
{
return(a-Math.floor(a/b)*b);
}
function Mod2Pi(x)
{
x = Mod(x, 2*pi);
return(x);
}
function Int(x)
{
if (x<0) { return(Math.ceil(x)); } else return(Math.floor(x));
}
// Koordinaten
var lon = 8.6681;
var lat = 50.1300;
// Konstanten
var pi = Math.PI;
var DEG = pi/180;
var RAD = 180/pi;
var eg = 279.403303;
var wg = 282.768422;
var eps = 0.016713*DEG;
var eps2 = 0.016713;
var T00 = 6.697374558;
var a0 = 147841870.691;
var t0 = 0.533128;
// Julianisches Datum
var now = new Date();
var JDyear = now.getFullYear();
var JDmonth = now.getMonth()+1;
var JDday = now.getDate();
var JDhour = now.getHours();
var JDminute = now.getMinutes();
var JDUThour = now.getUTCHours();
var JDUTminute = now.getUTCMinutes();
var JDsecond = now.getSeconds();
var timezone = -now.getTimezoneOffset()/60;
var jd = 2415020.5 - 64;
if (JDmonth <= 2) { JDyear--; JDmonth += 12; }
jd += Int( (JDyear-1900)*365.25 );
jd += Int( 30.6001*(1+JDmonth) );
var JDfinal = jd + JDday + (JDhour - timezone + JDminute/60 + JDsecond/3600)/24;
// Tage seit 1990
var TDT = JDfinal + (65/24/3600);
var days1990 = TDT-2447891.5;
// UT2GST converter
var gstT = (JDfinal - 2451545)/36525;
var T0 = Mod(6.697374558 + gstT*(2400.051336 + gstT*0.000025862), 24);
var UT = (JDUThour + (JDUTminute/60)) * 1.002737909;
var GST = Mod(UT + T0, 24);
var eps3 = (23.+(26+21.45/60)/60 + gstT*(-46.815 +gstT*(-0.0006 + gstT*0.00181) )/3600 )*DEG;
var coseps = Math.cos(eps3);
var sineps = Math.sin(eps3);
// Carrington Nummer
CRN = parseInt(1690 + ((JDfinal-2444235.34)/27.2753));
// Berechne Lambda
var eg2 = 279.403303*DEG;
var wg2 = 282.768422*DEG;
var beta = 0;
var MSun = 360*DEG/365.242191*days1990+eg2-wg2;
var nu = MSun + 360.*DEG/pi*eps2*Math.sin(MSun);
var lambda = Mod2Pi(nu+wg2)*RAD;
var lambda3 = Math.round(lambda*100)/100;
// Sonnenabstand
var f0 = (1+eps*Math.cos(nu))/(1-(eps*eps));
var rS = parseInt(a0/f0);
var rSae = parseInt((rS/147900000)*1000)/1000 ;
// Sonnendurchmesser
var tetaS = t0*f0;
var tetaS1 = (parseInt(tetaS*100)/100)*60;
// Deklination der Sonne
var L3 = lambda*DEG;
var Dek = Math.asin(Math.sin(L3) * sineps) / DEG;
var Dek2 = parseInt(Dek*100)/100;
// Rektaszension der Sonne
var ra = Mod2Pi(Math.atan2( (Math.sin(L3)*coseps-Math.tan(0)*sineps), Math.cos(L3) ) )/DEG/15 ;
var rah = parseInt(ra);
var ram = parseInt((ra-rah)*60);
// Sternzeichen
var Sternzeichen = new Array("Widder", "Stier", "Zwillinge", "Krebs", "Löwe", "Jungfrau", "Waage", "Skorpion", "Schütze", "Steinbock", "Wassermann", "Fische");
var aktZeichen = Sternzeichen[Math.floor(L3*RAD/30)];
// GST2LST converter
function GST2LST(x)
{
var LSTC = Mod(x+lon/15, 24.);
return(LSTC);
}
var LST = GST2LST(GST);
// LST2GST converter
function LST2GST(x)
{
var GSTC = Mod(x-lon/15, 24.);
return(GSTC);
}
// GST2UT converter
function GST2UT(x)
{
var JD2 = Math.floor(JDfinal-0.5)+0.5;
var T1 = (JD2 - 2451545)/36525;
var T2 = Mod(6.697374558 + T1*(2400.051336 + T1*T1*0.000025862), 24);
var UTC = Mod(x - T2, 24)*0.9972695663;
return(UTC);
}
// Stundenwinkel
var Hw = Mod(LST - ra, 24);
// Horizontale Koordinaten der Sonne
// ALT
var horA = Hw * 15;
var sinAl = Math.sin(Dek*DEG)*Math.sin(lat*DEG)+ Math.cos(Dek*DEG)*Math.cos(lat*DEG)*Math.cos(horA*DEG);
var Alb = Math.asin(sinAl)*RAD;
var fiAl = parseInt(Alb*100)/100;
// AZIMUT
var cosAz = (Math.sin(Dek*DEG)-Math.sin(lat*DEG)*sinAl)/Math.cos(lat*DEG)*Math.cos(Math.asin(sinAl)*DEG);
var AZb = Math.acos(cosAz)*RAD;
var sinH = Math.sin(horA*DEG);
if(sinH>=0)
{
var Azc = (360 - AZb);
}
else
{
var Azc = AZb;
}
var finAz = parseInt(Azc*100)/100;
document.write('| (Ortsspezifische Daten sind für Frankfurt am Main gerechnet) |
');
document.write('| Ekliptikale Länge |
');
document.write('| λ = ',lambda3,' ° |
');
document.write('| Azimut |
');
document.write('| A = ',finAz,' ° |
');
document.write('| Höhe |
');
document.write('| h = ',fiAl,' ° |
');
document.write('| Rektaszension |
');
document.write('| α = ',rah,' h ',ram,' m |
');
document.write('| Deklination |
');
document.write('| δ = ',Dek2,' ° |
');
document.write('| Aktuelle Carrington Rotationsnummer |
');
document.write('| ',CRN,' |
');
document.write('| Sonnendistanz [km] |
');
document.write('| r = ',rS,' |
');
document.write('| Sonnendistanz [AE] |
');
document.write('| r = ',rSae,' |
');
document.write('| Sonnendurchmesser |
');
document.write('| θ = ',tetaS1,' \' |
');
document.write('
|
');