Precession Constructor

public Precession(
	double zeta,
	double z,
	double theta,
	double meanObliquity
)

Public Sub New ( 
	zeta As Double,
	z As Double,
	theta As Double,
	meanObliquity As Double
)

public:
Precession(
	double zeta, 
	double z, 
	double theta, 
	double meanObliquity
)

new : 
        zeta : float * 
        z : float * 
        theta : float * 
        meanObliquity : float -> Precession

Parameters

zeta

Type: SystemDouble
The accumulated precession angle zeta, in radians, used to align the x-axis toward the direction in which the pole is to be tilted off of the ICRF z-axis.

z

Type: SystemDouble
The accumulated precession angle z, in radians, used to align the x-axis with the mean equinox of date by rotating along the mean equator of date.

theta

Type: SystemDouble
The accumulated precession angle theta, in radians, used to tilt the x-y-plane to the mean equator of date.

meanObliquity

Type: SystemDouble
The mean obliquity of the ecliptic, in radians.

Reference