astro::sun::geocentric_coord Namespace Reference

Namespaces
namespace	math

Typedefs
using	Fk5Correction

Functions
auto	vsop87d (const double jde) -> toolbox::SphericalCoordinate
	Calculate the geocentric position of the Sun, using VSOP87D.
auto	fk5_correction (const double jde, const toolbox::SphericalCoordinate &vsop87d_coord) -> Fk5Correction
	Compatibility entry for the VSOP87D-to-FK5 correction.
auto	apparent (const double jde) -> toolbox::SphericalCoordinate
	Calculate the apparent geocentric position of the Sun, using VSOP87D. The position is corrected to FK5 system, considering nutation and aberration.

Typedef Documentation

Fk5Correction

using astro::sun::geocentric_coord::Fk5Correction

Function Documentation

apparent()

auto astro::sun::geocentric_coord::apparent ( const double jde ) ->toolbox::SphericalCoordinate

inlinenodiscard

Calculate the apparent geocentric position of the Sun, using VSOP87D. The position is corrected to FK5 system, considering nutation and aberration.

Parameters

jde	The julian ephemeris day number, which is based on TT.

Returns

The geocentric ecliptic position of the Sun, after correction.

Exceptions

std::invalid_argument	If JDE(TT) is non-finite.
std::runtime_error	If an internal angle cannot be evaluated.

fk5_correction()

auto astro::sun::geocentric_coord::fk5_correction ( const double jde, const toolbox::SphericalCoordinate & vsop87d_coord )->Fk5Correction

inlinenodiscard

Compatibility entry for the VSOP87D-to-FK5 correction.

Parameters

jde	The julian ephemeris day number, which is based on TT.
vsop87d_coord	Dynamical ecliptic coordinates at the same epoch.

Returns

The correction (i.e. Δlongitude and Δlatitude).

See also

astro::coords::fk5_correction

vsop87d()

auto astro::sun::geocentric_coord::vsop87d ( const double jde ) ->toolbox::SphericalCoordinate

inlinenodiscard

Calculate the geocentric position of the Sun, using VSOP87D.

Parameters

jde	The Julian Ephemeris Day.

Returns

The geocentric ecliptic position of the Sun, calculated using VSOP87D.

The function invokes astro::earth::heliocentric_coord::vsop87d, and transforms the heliocentric coordinates to geocentric coordinates.