astro::moon::perturbation Namespace Reference

Functions
auto	longitude (const elp2000_82b::Context &ctx) -> double
	Calculate perturbation of the Moon's geocentric longitude.
auto	latitude (const elp2000_82b::Context &ctx) -> double
	Calculate perturbation of the Moon's geocentric latitude.

Function Documentation

latitude()

auto astro::moon::perturbation::latitude ( const elp2000_82b::Context & ctx ) ->double

inlinenodiscard

Calculate perturbation of the Moon's geocentric latitude.

As per Astronomical Algorithms, Jean Meeus, 1998, Chapter 47, the Moon is perturbed by Venus, Jupiter, and Earth.

Parameters

ctx	The context.

Returns

The perturbation of the Moon's geocentric latitude. Unit is 0.000001 degrees.

See also

Astronomical Algorithms, Jean Meeus, 1998, Chapter 47.

ERFA v2.0.1 moon98.c, Meeus additive latitude terms.

longitude()

auto astro::moon::perturbation::longitude ( const elp2000_82b::Context & ctx ) ->double

inlinenodiscard

Calculate perturbation of the Moon's geocentric longitude.

As per Astronomical Algorithms, Jean Meeus, 1998, Chapter 47, the Moon is perturbed by Venus, Jupiter, and Earth.

Parameters

ctx	The context.

Returns

The perturbation of the Moon's geocentric longitude. Unit is 0.000001 degrees.

See also

Astronomical Algorithms, Jean Meeus, 1998, Chapter 47.

ERFA v2.0.1 moon98.c, Meeus additive longitude terms.