returns the half size of the chart @return

http://en.wikipedia.org/wiki/Julian_day#Julian_Date @param date @return Julian Date

calculates julian centuries since J2000.0 for the provided julian day number @param julianDayNumber @return

http://de.wikipedia.org/wiki/Sternzeit#Berechnung_der_Sternzeit @param jd @return sidereal time in degrees.

Converts the provided degrees from decimal to a String with degrees, minutes and seconds. @param inDegrees decimal @return converted String

http://de.wikipedia.org/wiki/Aszendent_%28Astrologie%29#Berechnung_des_Aszendenten @param localSiderealDegrees @param latitude @return

http://en.wikipedia.org/wiki/Sunrise_equation#Equation_of_Center @param meanSolarAnomaly @return

http://en.wikipedia.org/wiki/Julian_day#Converting_Gregorian_calendar_date_to_Julian_Day_Number @param date @return

Also known as LST http://en.wikipedia.org/wiki/Sidereal_time @param date @return

calculates the solar meanpoint as ecliptic coordinate with a numeric eccentricity of ~0.0167 @param eclipticLongitude @param meanAnormaly @return