Luminosity is the measure of the total amount of energy emitted by a celestial object, such as a star or galaxy, per unit time. It is often expressed in terms of the Sun's luminosity, which is equivalent to 3.828 x 10^26 watts.
Luminosity is calculated by multiplying the surface area of a celestial object by its temperature and the Stefan-Boltzmann constant. The surface area and temperature can be determined through various methods, such as observations or theoretical models.
Earendel is a fictional star in J.R.R. Tolkien's Middle-earth universe. It is described as the brightest star in the sky and is associated with the character of Eärendil, who sails through the heavens on his ship Vingilot.
As Earendel is a fictional star, its luminosity cannot be accurately determined. However, based on its description as the brightest star in the sky, it can be assumed that its luminosity would be much greater than that of the Sun.
The luminosity of Earendel is significant because it is a key element in the mythology of Middle-earth and plays a significant role in the story of Eärendil. It also adds depth and richness to Tolkien's fictional universe and allows for further exploration and analysis by fans and scholars.