heyoka.model.rot_icrs_fk5j2000

heyoka.model.rot_icrs_fk5j2000(xyz: Iterable[expression]) → list[expression]

Rotation from ICRS to FK5.

Added in version 7.3.0.

This function will rotate the input Cartesian coordinates xyz from the axes of the ICRS frame to the axes of the FK5 frame at J2000.

Note

The FK5 at J2000 frame is also known as “EME2000”, “Mean Equator and Mean Equinox of the J2000 epoch”, or just “J2000”.

Parameters:

xyz – the input Cartesian coordinates.

Returns:

the rotated Cartesian coordinates.