https://www.omnicalculator.com/physics/luminosity

Luminosity calculator finds the luminosity, absolute magnitude and apparent magnitude of a star.

https://astro.unl.edu/naap/hr/hr_background2.html

Luminosity is the total energy that a star produces in one second. ... luminosity, temperature (spectral type), and radius with the Stellar Luminosity Calculator.

https://astro.unl.edu/classaction/animations/stellarprops/stellarlum.html

Stellar Luminosity Calculator. Demonstrates how a star's luminosity depends on its temperature and radius. UNL Astronomy / ClassAction. / Stellar Properties / ...

http://www.calctool.org/CALC/phys/astronomy/star_magnitude

Astronomy, astrophysics online calculation: Magnitude and Luminosity - Star brightness, apparent and absolute.

https://www.fxsolver.com/browse/formulas/Luminosity+of+a+Star

In astronomy, luminosity is the total amount of energy emitted by a star, galaxy, ... is also related to temperature and radius of the star by the equation shown.

http://www.1728.org/magntudj.htm

Luminosity is another way to express brightness. Here the Sun is given the arbitrary value of 1 and a star twice as bright as the Sun has a luminosity of 2 and a ...

https://www.vcalc.com/wiki/sspickle/Mass+from+Luminosity

May 10, 2019 ... The Mass from Luminosity calculator approximates the mass of a star based on its luminosity. INSTRUCTIONS: Stellar Mass (M): The calculator ...

http://astronomyonline.org/Science/Luminosity.asp

Physics - Formulas - Luminosity. Based on the Inverse Square Law, if we know distance and brightness of a star, we can determine its Luminosity (or actual ...

http://cas.sdss.org/dr4/en/proj/advanced/hr/radius1.asp

Calculating a star's radius is a somewhat lengthy process. You have to put together ... The luminosity of a star is given by the equation. L = 4pR2s T4,. Where L is ...

http://www.idialstars.com/april2013.htm

The luminosity of a star depends upon radius and surface temperature. ... In the equation below L = luminosity and R = radius. Let's say the radius of the star is 5  ...