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PositionVectorProperMotion Method
Adjust the position vector for proper motion (including foreshortening effects)

Namespace: ASCOM.Astrometry.NOVASCOM
Assembly: ASCOM.Astrometry (in ASCOM.Astrometry.dll) Version: 6.0.0.0 (6.3.0.2839)
Syntax
public bool ProperMotion(
	VelocityVector vel,
	double tjd1,
	double tjd2
)

Parameters

vel
Type: ASCOM.Astrometry.NOVASCOMVelocityVector
The velocity vector of the object
tjd1
Type: SystemDouble
The first epoch (Terrestrial Julian Date)
tjd2
Type: SystemDouble
The second epoch (Terrestrial Julian Date)

Return Value

Type: Boolean
True if successful or throws an exception.
Exceptions
ExceptionCondition
ValueNotSetExceptionIf the position vector x, y or z values has not been set
ValueNotAvailableExceptionIf the supplied velocity vector does not have valid x, y and z components
Remarks