ABSOLUTE  MAGNITUDES  OF  SELECTED  OBJECTS

Object

Mv  

Object

Mv
   Bright Quasar    -25      Altair     2.2
   cD Galaxy    -23      Sun (bolometric, L = 3.83 ´ 1026 W      4.75
    M 31    -21.6      Sun (visual)     4.83
   The Galaxy    -21.?      Sirius B (white dwarf)   11.56
   Supernova (Type Ia)    -19.?      Barnard's Star   13.25
         
  Large Globular Star Cluster    -13      Proxima Centauri (nearest star)    15.45
  S Doradus (once thought to have been a star)      -9.4      VB 10    18.57
  Deneb      -7.3      Faintest Stars 20
  Rigel      -7.0      Jupiter* at opposition    25.9
  Polaris      -4.6ª      100-Watt Light Bulb (efficiency = 10%)    68.7
         
   Spica      -3.6      *Given planetary magnitude refers to maximum brightness.
   Capella      -0.7      ªVariable star.  Given magnitude refers to mean brightness.
   Arcturus      -0.2      
   Vega     +0.5                               M = m + 5 - 5 log r  
   Sirius       1.4