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NOVAS2COM Methods

The NOVAS2COM type exposes the following members.

Methods
  Name Description
Public method Aberration
Corrects position vector for aberration of light.
Public method AppPlanet
Compute the apparent place of a planet or other solar system body.
Public method AppStar
Computes the apparent place of a star
Public method AstroPlanet
Computes the astrometric place of a planet or other solar system body.
Public method AstroStar
Computes the astrometric place of a star
Public method BaryToGeo
Moves the origin of coordinates from the barycenter of the solar system to the center of mass of the Earth
Public method CalDate
Compute a date on the Gregorian calendar given the Julian date.
Public method CelPole
This function allows for the specification of celestial pole offsets for high-precision applications.
Public method DeltaT
Return the value of DeltaT for the given Julian date
Public method EarthTilt
Computes quantities related to the orientation of the Earth's rotation axis at Julian date 'tjd'.
Public method Ephemeris
Retrieves the position and velocity of a body from a fundamental ephemeris.
Public method Equ2Hor
Transform apparent equatorial coordinates to horizon coordinates
Public method FundArgs
To compute the fundamental arguments.
Public method GetEarth
Obtains the barycentric and heliocentric positions and velocities of the Earth from the solar system ephemeris.
Public method JulianDate
This function will compute the Julian date for a given calendar date (year, month, day, hour).
Public method LocalPlanet
Computes the local place of a planet or other solar system body, given the location of the observer.
Public method LocalStar
Computes the local place of a star
Public method MakeCatEntry
To create a structure of type 'cat_entry' containing catalog data for a star or "star-like" object.
Public method MeanStar
Computes the mean place of a star for J2000.0
Public method Nutate
Nutates equatorial rectangular coordinates from mean equator and equinox of epoch to true equator and equinox of epoch.
Public method NutationAngles
Provides fast evaluation of the nutation components according to the 1980 IAU Theory of Nutation.
Public method Pnsw
Transforms a vector from an Earth-fixed geographic system to a space-fixed system
Public method Precession
Precesses equatorial rectangular coordinates from one epoch to another.
Public method ProperMotion
Applies proper motion, including foreshortening effects, to a star's position.
Public method RADec2Vector
Converts equatorial spherical coordinates to a vector (equatorial rectangular coordinates).
Public method Refract
Computes atmospheric refraction in zenith distance.
Public method SetBody
Sets up a structure of type 'body' - defining a celestial object- based on the input parameters.
Public method SiderealTime
Computes the Greenwich apparent sidereal time, at Julian date 'jd_high' + 'jd_low'.
Public method SolarSystem
Provides the position and velocity of the Earth
Public method Spin
Transforms geocentric rectangular coordinates from rotating system to non-rotating system
Public method StarVectors
Converts angular quanities for stars to vectors.
Public method SunEph
Compute equatorial spherical coordinates of Sun referred to the mean equator and equinox of date.
Public method SunField
Corrects position vector for the deflection of light in the gravitational field of the Sun.
Public method Tdb2Tdt
Converts TDB to TT or TDT
Public method Terra
Computes the position and velocity vectors of a terrestrial observer with respect to the center of the Earth.
Public method TopoPlanet
Computes the topocentric place of a planet, given the location of the observer.
Public method TopoStar
Computes the topocentric place of a star
Public method TransformCat
To transform a star's catalog quantities for a change of epoch and/or equator and equinox.
Public method TransformHip
To convert Hipparcos data at epoch J1991.25 to epoch J2000.0 and FK5-style units.
Public method Vector2RADec
Converts an vector in equatorial rectangular coordinates to equatorial spherical coordinates.
Public method VirtualPlanet
Computes the virtual place of a planet or other solar system body.
Public method VirtualStar
Computes the virtual place of a star
Public method Wobble
Corrects Earth-fixed geocentric rectangular coordinates for polar motion.
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