NovasLimbAngle Method

public static void LimbAngle(
	double[] PosObj,
	double[] PosObs,
	ref double LimbAng,
	ref double NadirAng
)

Public Shared Sub LimbAngle ( 
	PosObj As Double(),
	PosObs As Double(),
	ByRef LimbAng As Double,
	ByRef NadirAng As Double
)

Parameters

PosObj  Double

Position vector of observed object, with respect to origin at geocenter, components in AU.

PosObs  Double

Position vector of observer, with respect to origin at geocenter, components in AU.

LimbAng  Double

Angle of observed object above (+) or below (-) limb in degrees.

NadirAng  Double

Nadir angle of observed object as a fraction of apparent radius of limb: < 1.0 ... below the limb; = 1.0 ... on the limb; > 1.0 ... above the limb

Reference