Distance Modulus
Distance Modulus:  m - M Distance in Parsecs:  d
-5.0 1.0
-4.0 1.6
-3.0 2.5
-2.0 4.0
-1.0 6.3
0.0 10.0
1.0 16
2.0 25
3.0 40
4.0 63
5.0 100
10.0 103
15.0 104
20.0 105
25.0 106

  Please note the following:
          (1) The exact relationship between distance modulus and distance in parsecs is

                                                     m - M = 5 log d - 5    or    d = 10(5+m-M)/5.

          (2) A star with a distance modulus of 0.00 is exactly 10 parsecs distant.
          (3) The relationship in (1) above assumes there is no obscuration of a star's light.
          (4) Obscuration increases m - M, making a star appear farther away than it really is.