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Global Variables Reference
Global Variables
The following global variables are available globally.
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Constant value substracted from Julian Day to create so-called modified julian days.
Declaration
Swift
public let ModifiedJulianDayZero: Double -
The length of Julian Years, in days.
Declaration
Swift
public let JulianYear: Day -
The length of Besselian Years, in days.
Declaration
Swift
public let BesselianYear: Day -
The new standard epoch, as decided by the IAU in 1984.
Declaration
Swift
public let StandardEpoch_J2000_0: JulianDay -
Undocumented
Declaration
Swift
public let StandardEpoch_B1950_0: JulianDay -
Mean value of the lunar equator inclination, relative to the ecliptic.
Declaration
Swift
public let MeanLunarEquatorInclination: Degree -
Conversion factor from radians to degrees.
Declaration
Swift
public let rad2deg: Double -
Conversion factor from degrees to radians.
Declaration
Swift
public let deg2rad: Double -
Conversion factor from radians to hours.
Declaration
Swift
public let rad2hour: Double -
Conversion factor from hours to radians.
Declaration
Swift
public let hour2rad: Double -
Conversion factor from Astronomical Unit to parsecs.
Declaration
Swift
public let AU2pc: Double -
Conversion factor from Astronomical Unit to meters.
Declaration
Swift
public let AU2m: Double -
Conversion factor from Astronomical Unit to light-years.
Declaration
Swift
public let AU2ly: Double