Recent content by Michael_L

  1. Michael_L

    Undergrad How to find the distance from a star to the center of the Milky Way Galaxy?

    The ABC angle is the real challenge here. It is not an easy transformation form observed angles (alpha and delta) to galactocentric angle.
  2. Michael_L

    Undergrad How to find the distance from a star to the center of the Milky Way Galaxy?

    Ok, I see. So what do I have to do to calculate it? The info I have can be found here: https://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=TRAPPIST-1 I got some idea: "Distance (pc)" is calculated from the Sun, and not from the center. But if I have...
  3. Michael_L

    Undergrad How to find the distance from a star to the center of the Milky Way Galaxy?

    The distance of the sun to the Galactic Center is about 7.4–8.7 kiloparsecs. If I use the known data of stars in various stellar catalogues, how can I calculate (approximately) a distance of a given star from the Center? What kind of data I need to look for? can it be calculated from Right...