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Exoplanet Equilibrium Temperature Calculator
Estimate an exoplanet temperature from its star and orbital distance.
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Equilibrium temperature
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Estimate an exoplanet temperature from its star and orbital distance.
Exoplanet Equilibrium Temperature Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: T = Ts sqrt(Rs/2a) (1-A)^(1/4).
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Exoplanet Quick Guide
Typical values for reference.
| Star K | Star radius | AU | Temp |
|---|---|---|---|
| 5772 | 1 | 1 | 255 K |
| 3042 | 0.12 | 0.029 | 273 K |
| 5772 | 1 | 0.72 | 300 K |
| 6500 | 1.4 | 1.6 | 268 K |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Exoplanet Equilibrium Temperature Calculator FAQ
Answers to common questions about this calculator.
The temperature of a planet in balance with starlight, ignoring atmosphere.
No, greenhouse effects change it.
Distances where liquid water could exist.
It is a simple model.