Stellar Luminosity Calculator
Calculate stellar luminosity using Stefan-Boltzmann law. Find absolute magnitude, main sequence lifetime, and stellar parameters.
Inputs
Solar Radii
K
Solar Masses
Results
Luminosity
1.004 Solar Luminosities
Absolute Magnitude
4.83
Main Sequence Lifetime
10,000,000,000 billion years
Apparent Magnitude4.83
Surface Flux63,200,699.73 W/mΒ²
How to Use This Calculator
- Enter Stellar Radius (solar radii) β the Sun is 1 Rβ; giants like Betelgeuse exceed 1,000 Rβ.
- Enter Surface Temperature (K) from spectral classification: O stars >30,000 K, G stars ~5,000β6,000 K, M stars <3,500 K.
- Enter Stellar Mass (solar masses) to compute the Main Sequence Lifetime via the mass-luminosity relation.
- Read Luminosity (solar luminosities) and Absolute Magnitude to compare with catalog values.
- Use Main Sequence Lifetime (billion years) to understand how much longer the star will remain hydrogen-burning.
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Formula
L = 4ΟRΒ²ΟTβ΄ (Stefan-Boltzmann Law)Related Calculators
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