So standing outside in the garden, can we physically point to the center of rotation of the galaxy? I understand that from our viewpoint on Earth, it would be a moving point, so allowing for Earth rotation and orbits of the Sun and Earth, can we now pinpoint the galactic center?
What? Like this? Credit & Copyright: Yuri Beletsky (ESO).
The 3D coordinates of the Galactic Center are generally taken as those of the Sagittarius A* radio source (the G.C. is behind too much dust to see anything at visible wavelengths). These are right ascension 17h45m40s and declination -29d00m28s and at a radial distance from the solar system of about 8000 pc (26,000 light years, but with an uncertainty of about 5%).