The apparent V-band magnitude of VV Ori is m = 5.34.

   Q:  What is the absolute magnitude M if we use the
           parallax measurement from 1918?


               d = 196 pc    --->   (m - M) = 6.46

                   -->  M  =  5.34 - 6.46  =  -1.12



   Q:  What if we use the measurement from Hipparcos?


               d = 588 pc    --->   (m - M) = 8.85

                   -->  M  =  5.34 - 8.85  =  -3.51



   Q:  What if we use the measurement from Gaia?

               d = 442 pc    --->   (m - M) = 8.23

                   -->  M  =  5.34 - 8.23  =  -2.89