SofaC2i00a Method

Form the celestial-to-intermediate matrix using the IAU 2000A precession-nutation model.

Definition

Namespace: ASCOM.Tools
Assembly: ASCOM.AstrometryTools (in ASCOM.AstrometryTools.dll) Version: 3.0.0-rc.1+86c25ce733aebb4d8b1b8a62e84770ea5e972bea

C#

public static void C2i00a(
	double date1,
	double date2,
	double[] rc2
)

VB

Public Shared Sub C2i00a ( 
	date1 As Double,
	date2 As Double,
	rc2 As Double()
)

Parameters

date1 Double: TT as a 2-part Julian Date (part 1).
date2 Double: TT as a 2-part Julian Date (part 2).
rc2 Double: Returned celestial-to-intermediate matrix (row-major, length 9).

Remarks

This matrix is the first stage in the transformation from celestial (GCRS) to terrestrial (ITRS) coordinates.

Exceptions

ArgumentNullException	Thrown if any array parameter is null.
ArgumentException	Thrown if any array parameter has incorrect length.

Version Information

.NET Standard

Supported in: 2.0