Fact Sheet


All About Kepler 186

- 5 interior planets

- 1 in the “Goldilocks Zone” (186f)

- ~500 lightyears from Earth in the constellation Cygnus

- Discovery confirmed February 2014

- 4 innermost planets are tidally locked

- 186f has about a 50% chance of being tidally locked

-There is an unusual spacing between Kepler 186e and 186f

- There may be 1 or 2 more small planets between 186e and 186f, and one beyond 186f

- Theorized by the Titus-Bode Law and Dermott’s Law

-If there are planets in between 186e and 186f they are most likely a few degrees off the orbital plane

-If there are no intermediate planets, Kepler 186f most likely formed further out and drifted inwards.

-This chart shows simulated formations of the star system versus the observed star system



Instrument + Techniques Used in Detection

- Planetary Transits

- Measure decrease in stellar luminosity and infer existence of planet

- Kepler Telescope




The Star (Kepler 186)

- M1V Type dwarf star (Red Dwarf)

- Half the mass, half the size, and roughly half the metallicity of the sun






Image courtesy of NASA JPL, CalTech