Luminosity

The Luminosity of a star represents the amount of power, or energy over time, emitted by the star.

Location
The Luminosity property can be found in the first section of the Overview tab in the properties panel of a star.

Units
Luminosity can be viewed and edited using the following units:
 * Solar luminosity (L star) = 3.846×1026 W
 * Watts (W) is the SI unit for luminosity.