Luminosity
In 2006, Humphreys used the spectral energy distribution distance of VY Canis Majoris to calculate its luminosity. Since most of the radiation coming from the star is reprocessed by the dust in the surrounding cloud, she integrated the total fluxes over the entire nebula and showed that VY Canis Majoris has a luminosity of 5.6×105 L☉.
More recent estimates of the luminosity using a variety of methods give lower values of around 3×105 L☉.
Read more about this topic: VY Canis Majoris