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SuperNOVAS: src/solsys-ephem.c File Reference
SuperNOVAS major planet ephemeris handler via the same generic ephemeris reader that is configured by set_ephem_provider() prior to calling this routine.
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Date
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Created on Jan 29, 2024
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See also
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solarsystem.h
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solsys-calceph.c
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solsys-cspice.c
◆ planet_ephem_provider() short planet_ephem_provider ( double jd_tdb, enum novas_planet body, enum novas_origin origin, double *restrict position, double *restrict velocity )
Major planet ephemeris data via the same generic ephemeris provider that is configured by set_ephem_provider() prior to calling this routine. This is the regular (reduced) precision version.
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Parameters
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jd_tdb [day] Barycentric Dynamical Time (TDB) based Julian date. body Major planet number (or that for Sun, Moon, SSB...) origin NOVAS_BARYCENTER (0) or NOVAS_HELIOCENTER (1) relative to which to report positions and velocities. [out] position [AU] Position vector of 'body' at jd_tdb; equatorial rectangular coordinates in AU referred to the ICRS. [out] velocity [AU/day] Velocity vector of 'body' at jd_tdb; equatorial rectangular system referred to the ICRS, in AU/day.
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Returns
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0 if successful, or else an error code of solarsystem().
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See also
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planet_ephem_provider_hp()
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set_ephem_provider()
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solarsystem()
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Since
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1.0
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Author
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Attila Kovacs
References planet_ephem_provider_hp().
◆ planet_ephem_provider_hp() short planet_ephem_provider_hp ( const double jd_tdb[restrict 2], enum novas_planet body, enum novas_origin origin, double *restrict position, double *restrict velocity )
Major planet ephemeris data via the same generic ephemeris provider that is configured by set_ephem_provider() prior to calling this routine. This is the highest precision version.
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Parameters
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jd_tdb [day] Barycentric Dynamical Time (TDB) based Julian date, split into high and low order components (e.g. integer and fractional parts) for high-precision calculations. body Major planet number (or that for Sun, Moon, SSB...) origin NOVAS_BARYCENTER (0) or NOVAS_HELIOCENTER (1) relative to which to report positions and velocities. [out] position [AU] Position vector of 'body' at jd_tdb; equatorial rectangular coordinates in AU referred to the ICRS. [out] velocity [AU/day] Velocity vector of 'body' at jd_tdb; equatorial rectangular system referred to the ICRS, in AU/day.
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Returns
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0 if successful, or else an error code of solarsystem_hp().
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See also
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planet_ephem_provider()
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set_ephem_provider()
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solarsystem_hp()
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Since
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1.0
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Author
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Attila Kovacs
References get_ephem_provider(), NOVAS_BARYCENTER, NOVAS_HELIOCENTER, NOVAS_PLANET_NAMES_INIT, NOVAS_PLANETS, NOVAS_SSB, and NOVAS_SUN.
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