Any Galaxy (Milky-way) based coordinate systems?

[vsrawat]

TL;DR Summary

As the Sun also moves, how to find its absolute coordinates in the galaxy?

There is an "Ecliptic coordinate system" that represents the apparent positions, orbits, and pole orientations of Solar System objects.

But, the Sun itself is NOT having a fixed immovable positon:
- It moves around the barrycenter of the solar system
- It also revolves around the central black hole of our Milky Way galaxy.

Is there any Milky-way-based coordinate system that gives the position of the Sun/ other solar system bodies at any particualr time?

Is there any site/ software showing pictorial representation of such a "Milky-way-based" movements of solar system bodies?

Thanks.

 

[Baluncore]

Welcome to PF.

Galactic coordinates.
https://en.wikipedia.org/wiki/Galactic_coordinate_system

There is software available to translate to and from GC. An old example is:
https://en.wikipedia.org/wiki/Starlink_Project

 

[berkeman]

Galactic coordinates.
https://en.wikipedia.org/wiki/Galactic_coordinate_system

That seems weird to me. Why is our Sun designated as the origin of that coordinate system? Shouldn't it be the center of the Milky Way Galaxy instead? Does the Equatorial Coordinate System also use the Sun as the origin?

 

[Baluncore]

A Sun centred galaxy makes it easier to calculate what the sky will look like above our heads. To us, our galaxy appears to be Sun centred.