ICRS and Galactic Astrometry Converter

Convert positions, proper motions, and their uncertainties between Equatorial (ICRS) and Galactic coordinates. No external libraries or network resources are used.

Conversion direction

Equatorial (ICRS) to Galactic Galactic to Equatorial (ICRS)

Input

Position

Proper motion

Proper-motion errors

Output

Position

Proper motion

Proper-motion errors

PMRA means μ_α cos δ, and pml means μ_l cos b. Proper-motion errors must be entered as a pair. Their correlation coefficient defaults to 0.0.