ASCOM Library
NovasETilt Method
Computes quantities related to the orientation of the Earth's rotation axis at Julian date 'JdTdb'.
Definition
Namespace: ASCOM.Tools.Novas31
Assembly: ASCOM.AstrometryTools (in ASCOM.AstrometryTools.dll) Version: 3.0.0-rc.1+86c25ce733aebb4d8b1b8a62e84770ea5e972bea
Assembly: ASCOM.AstrometryTools (in ASCOM.AstrometryTools.dll) Version: 3.0.0-rc.1+86c25ce733aebb4d8b1b8a62e84770ea5e972bea
C#
public static void ETilt(
double JdTdb,
Accuracy Accuracy,
ref double Mobl,
ref double Tobl,
ref double Ee,
ref double Dpsi,
ref double Deps
)VB
Public Shared Sub ETilt (
JdTdb As Double,
Accuracy As Accuracy,
ByRef Mobl As Double,
ByRef Tobl As Double,
ByRef Ee As Double,
ByRef Dpsi As Double,
ByRef Deps As Double
)Parameters
- JdTdb Double
- TDB Julian Date.
- Accuracy Accuracy
- Selection for accuracy
- Mobl Double
- Mean obliquity of the ecliptic in degrees at 'JdTdb'.
- Tobl Double
- True obliquity of the ecliptic in degrees at 'JdTdb'.
- Ee Double
- Equation of the equinoxes in seconds of time at 'JdTdb'.
- Dpsi Double
- Nutation in longitude in arcseconds at 'JdTdb'.
- Deps Double
- Nutation in obliquity in arcseconds at 'JdTdb'.
Remarks
Values of the celestial pole offsets 'PSI_COR' and 'EPS_COR' are set using function 'cel_pole',
if desired. See the prolog of 'cel_pole' for details.