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NOVAS2Terra Method
Computes the position and velocity vectors of a terrestrial observer with respect to the center of the Earth.

Namespace: ASCOM.Astrometry.NOVAS
Assembly: ASCOM.Astrometry (in ASCOM.Astrometry.dll) Version: 6.0.0.0 (6.2.0.2774)
Syntax
public static void Terra(
	ref SiteInfo locale,
	double st,
	ref double[] pos,
	ref double[] vel
)

Parameters

locale
Type: ASCOM.AstrometrySiteInfo
Longitude, latitude and height of the observer (in a SiteInfoStruct)
st
Type: SystemDouble
Local apparent sidereal time at reference meridian in hours.
pos
Type: SystemDouble
Position vector of observer with respect to center of Earth, equatorial rectangular coordinates, referred to true equator and equinox of date, components in AU.
vel
Type: SystemDouble
Velocity vector of observer with respect to center of Earth, equatorial rectangular coordinates, referred to true equator and equinox of date, components in AU/Day.
Remarks