Module iers 

IERS reference systems, conventions, and Earth orientation sub-models.

Modules

cio

Celestial Intermediate Origin locator. Module cio exposes functions for calculating the Celestial Intermediate Origin (CIO) locator, s.

cip

Celestial Intermediate Pole coordinates. Module cip exposes functions for calculating the position of the Celestial Intermediate Pole (CIP).

earth_rotation

Earth rotation angle and equation of the equinoxes. Module rotation_angle exposes functions for calculating the Earth Rotation Angle (ERA).

ecliptic

Obliquity of the ecliptic.

fundamental

Fundamental (Delaunay) arguments. Fundamental astronomical arguments according to various IAU conventions.

nutation

Nutation models. Module nutation exposes a function for calculating Earth nutation using a number of IAU nutation models.

polar_motion

Polar motion coordinates and matrices.

precession

Precession matrices and frame bias.

tio

Terrestrial Intermediate Origin locator. Module tio exposes functions for calculating the Terrestrial Intermediate Origin (TIO) locator, s’, which places the TIO on the equator of the Celestial Intermediate Pole (CIP).

Structs

Corrections

Earth orientation parameter corrections (δψ/δX, δε/δY).

Iers1996

IERS 1996 conventions.

Iers2003

IERS 2003 conventions, parameterised by IAU 2000 nutation model.

Iers2010

IERS 2010 conventions.

Enums

Iau2000Model

IAU 2000 nutation model variant.

ReferenceSystem

Dynamic dispatch enum for IERS convention systems.

Traits

IersSystem

Sealed trait for IERS convention systems.