Одны дулаан

Star

Preset

Luminosity L/L☉ Exact luminosity

Planet and orbit

Orbital distance r Exact distance in AU Bond albedo A Greenhouse model Effective IR escape ε_IR Greenhouse warming ΔT Redistribution

Irradiance

Equilibrium temperature

Airless baseline with ε_IR = 1.

Surface estimate

Simplified zone

Plot controls

Minimum distance Maximum distance Goldilocks lower T Goldilocks upper T Log distance axis

Temperature versus distance

The shaded band is a simplified liquid-water temperature band.

Irradiance versus distance

Flux falls as inverse square distance, a useful bridge to solar-panel planning.

Model

Stellar irradiance is I(r) = S0 L / r², where S0 is solar irradiance at 1 AU.

Albedo changes absorbed sunlight. Greenhouse modes change the surface estimate through either effective IR escape ε_IR or a simple ΔT offset. Venus is a warning: high albedo reflects sunlight, but strong greenhouse trapping can still produce extreme surface temperature.