Computes the ICRS position of a star, given its apparent place at date 'JdTt'. Proper motion, parallax and radial velocity are assumed to be zero.

Namespace: ASCOM.Astrometry.NOVAS
Assembly: ASCOM.Astrometry (in ASCOM.Astrometry.dll) Version: 6.0.0.0 (6.1.1.2619)

Syntax

C#
public short MeanStar(
	double JdTt,
	double Ra,
	double Dec,
	Accuracy Accuracy,
	ref double IRa,
	ref double IDec
)
Visual Basic
Public Function MeanStar ( _
	JdTt As Double, _
	Ra As Double, _
	Dec As Double, _
	Accuracy As Accuracy, _
	ByRef IRa As Double, _
	ByRef IDec As Double _
) As Short
Visual C++
public:
virtual short MeanStar(
	double JdTt, 
	double Ra, 
	double Dec, 
	Accuracy Accuracy, 
	double% IRa, 
	double% IDec
) sealed

Parameters

JdTt
Type: System..::..Double
TT Julian date of apparent place.
Ra
Type: System..::..Double
Apparent right ascension in hours, referred to true equator and equinox of date.
Dec
Type: System..::..Double
Apparent declination in degrees, referred to true equator and equinox of date.
Accuracy
Type: ASCOM.Astrometry..::..Accuracy
Specifies accuracy level
IRa
Type: System..::..Double%
ICRS right ascension in hours.
IDec
Type: System..::..Double%
ICRS declination in degrees.

Return Value

    0 ... Everything OK
    1 ... Iterative process did not converge after 30 iterations; 
 > 10 ... Error from function 'Vector2RaDec'
 > 20 ... Error from function 'AppStar'.
 

Remarks