Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Apparent magnitude

  1. May 2, 2006 #1
    The extinction to our galactic center is about Av=20mag. What would be the apparent magnitude of our sun at the 8000parsec distance of the galactic center?

    From what I know, I think I need to use http://en.wikipedia.org/wiki/Absolute_magnitude#Computation the luminosity-distance formula. So I'd have m=20mag+5*(log(8000)-1) . Is this correct, am I missing something, or am I going at this totally wrong?

  2. jcsd
  3. May 2, 2006 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Close, but not quite. What would the sun's apparent magnitude be at that distance if there were no extinction?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook