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NOVAS2Pnsw Method
Transforms a vector from an Earth-fixed geographic system to a space-fixed system

Namespace: ASCOM.Astrometry.NOVAS
Assembly: ASCOM.Astrometry (in ASCOM.Astrometry.dll) Version: 6.0.0.0 (6.3.0.2839)
Syntax
public static void Pnsw(
	double tjd,
	double gast,
	double x,
	double y,
	double[] vece,
	ref double[] vecs
)

Parameters

tjd
Type: SystemDouble
TT (or TDT) Julian date
gast
Type: SystemDouble
Greenwich apparent sidereal time, in hours.
x
Type: SystemDouble
Conventionally-defined X coordinate of rotational pole with respect to CIO, in arcseconds.
y
Type: SystemDouble
Conventionally-defined Y coordinate of rotational pole with respect to CIO, in arcseconds.
vece
Type: SystemDouble
Vector in geocentric rectangular Earth-fixed system, referred to geographic equator and Greenwich meridian.
vecs
Type: SystemDouble
OUT: Vector in geocentric rectangular space-fixed system, referred to mean equator and equinox of J2000.0.
Remarks
Transforms a vector from an Earth-fixed geographic system to a space-fixed system based on mean equator and equinox of J2000.0; applies rotations for wobble, spin, nutation, and precession.
See Also