Star Luminosity
Calculate Star Luminosity instantly with the exact formula and a worked example.
Star Luminosity
Radius (R☉)
TemperatureK
Luminosity (L☉)
1
More about: Star Luminosity
What it calculates
The “Star Luminosity” calculator computes Luminosity (L☉) from 2 parameters: radius (r☉), temperature (K).
An astronomy calculation for enthusiasts and scientists.
Example calculation
With parameters Radius (R☉) = 1, Temperature = 5,778 K the result is 1 (L/L☉ = (R/R☉)²·(T/T☉)⁴).
How to use
- Enter radius (r☉) and temperature — each field above is adjustable with a slider.
- Luminosity (L☉) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Star Luminosity calculated?
The Star Luminosity calculator computes Luminosity (L☉) from radius (r☉), temperature. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Star Luminosity calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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