NovasTopoStar Method

public static short TopoStar(
	double JdTt,
	double DeltaT,
	CatEntry3 Star,
	OnSurface Position,
	Accuracy Accuracy,
	ref double Ra,
	ref double Dec
)

Public Shared Function TopoStar ( 
	JdTt As Double,
	DeltaT As Double,
	Star As CatEntry3,
	Position As OnSurface,
	Accuracy As Accuracy,
	ByRef Ra As Double,
	ByRef Dec As Double
) As Short

Parameters

JdTt  Double

TT Julian date for topocentric place.

DeltaT  Double

Difference TT-UT1 at 'JdTt', in seconds of time.

Star  CatEntry3

Catalog entry structure containing catalog data for the object in the ICRS

Position  OnSurface

Specifies the position of the observer

Accuracy  Accuracy

Code specifying the relative accuracy of the output position.

Ra  Double

Topocentric right ascension in hours, referred to true equator and equinox of date 'JdTt'.

Dec  Double

Topocentric declination in degrees, referred to true equator and equinox of date 'JdTt'.

Return Value

            =  0 ... Everything OK.
            =  1 ... Invalid value of 'Where' in structure 'Location'.
            > 10 ... Error code from function 'MakeObject'.
            > 20 ... Error code from function 'Place'.
            

Reference