Compute the "complementary terms" of the equation of the equinoxes consistent with IAU 2000 resolutions.

Namespace: ASCOM.Astrometry.NOVAS
Assembly: ASCOM.Astrometry (in ASCOM.Astrometry.dll) Version: 6.0.0.0 (6.1.1.2619)

Syntax

C#
public double EeCt(
	double JdHigh,
	double JdLow,
	Accuracy Accuracy
)
Visual Basic
Public Function EeCt ( _
	JdHigh As Double, _
	JdLow As Double, _
	Accuracy As Accuracy _
) As Double
Visual C++
public:
virtual double EeCt(
	double JdHigh, 
	double JdLow, 
	Accuracy Accuracy
) sealed

Parameters

JdHigh
Type: System..::..Double
High-order part of TT Julian date.
JdLow
Type: System..::..Double
Low-order part of TT Julian date.
Accuracy
Type: ASCOM.Astrometry..::..Accuracy
Selection for accuracy

Return Value

Complementary terms, in radians.

Remarks

1. The series used in this function was derived from Series from IERS Conventions (2003), Chapter 5, Table 5.2C. This same series was also adopted for use in the IAU's Standards of Fundamental Astronomy (SOFA) software (i.e., subroutine eect00.for and function eect00.c).

2. The low-accuracy series used in this function is a simple implementation derived from the first reference, in which terms smaller than 2 microarcseconds have been omitted.

3. This function is based on NOVAS Fortran routine 'eect2000', with the low-accuracy formula taken from NOVAS Fortran routine 'etilt'.

See Also