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NOVAS2COMPrecession Method
Precesses equatorial rectangular coordinates from one epoch to another.

Namespace: ASCOM.Astrometry.NOVAS
Assembly: ASCOM.Astrometry (in ASCOM.Astrometry.dll) Version: 6.0.0.0 (6.2.0.2774)
Syntax
public void Precession(
	double tjd1,
	double[] pos,
	double tjd2,
	ref double[] pos2
)

Parameters

tjd1
Type: SystemDouble
TDB Julian date of first epoch.
pos
Type: SystemDouble
Position vector, geocentric equatorial rectangular coordinates, referred to mean equator and equinox of first epoch.
tjd2
Type: SystemDouble
TDB Julian date of second epoch.
pos2
Type: SystemDouble
OUT: Position vector, geocentric equatorial rectangular coordinates, referred to mean equator and equinox of second epoch.
Remarks
The coordinates are referred to the mean equator and equinox of the two respective epochs.
See Also