- Until now, we've only talked about Apparent magnitude

- This depends, among other things, on the distance to the star.

- We can correct for distance by talking about Absolute magnitude.

- This is what magnitude a given star would have if it were moved to a distance of 10 parsecs.

Examples:

  Deneb: Absolute Magnitude of -7.5

  The Sun: Absolute Magnitude of 4.8

  Proxima Centauri: Absolute Magnitude of 15.5