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OrbitLab
How much light does this star put out?
Luminosity depends on the square of a star's radius but the fourth power of its temperature — a star just slightly hotter than the Sun radiates dramatically more energy per unit area, and larger surface area amplifies that further.
Luminosity and temperature together are exactly the two axes of the Hertzsprung-Russell diagram, the single most important chart in stellar astrophysics for classifying and understanding how stars evolve.
Molar mass of any chemical formula (e.g. H2O, C6H12O6, Ca(OH)2).
OpenPercent composition of an element within a chemical formula.
OpenSimplest whole-number ratio formula from elemental masses or percentages.
OpenPercent yield from actual and theoretical reaction yields.
OpenLuminosity
1 L☉
Defaults match the Sun (L = 1 L☉)
What you entered
Temperature ratio to the Sun (5778 K)
5778 ÷ 5778= 1L = R² × (T/T☉)⁴
1² × 1⁴= 1 L☉Result
Luminosity: 1 L☉
A star this size and temperature radiates 1× the Sun's luminosity.