Planetary Calculator

Simple planetary size calculator based on a central transit of primary star using formulas from the Kepler Transit Characteristics page

For non-central transits, it is slightly more complicated, but try this.

Select a preset:

Transit depth (∆Flux):

Apparent magnitude of star:

Temperature: K

Radius of star (in solar radii): R
Explain this

Mass of star (in solar masses): M

Period of planet: days
Transit duration hrs

(If one field is 0 it will be calculated from the other)

Click to the planet characteristics

Radius of planet RJ

Orbital distance of planet AU

Distance to star LY