The Kepler-406 system contains 2 exoplanets. It is located 1187.31 light years away from the solar system.
| Mass | 1.07 solar masses |
| Radius | 1.07 solar radiae |
| Temperature | 5538 kelvin |
| Stellar Metallicity | 0.18 decimal exponent |
| Age | 5.84 billion years |
At more than 10 Earth masses, Kepler-406 b is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune.
| Mass | 6.350 Earth masses |
| Density | 11.820 grams per cubic centimeter |
| Radius | 1.430 Earth radiae |
| Semi-major Axis | 0.0359 AU |
| Eccentricity | 0 |
| Orbital Period | 2.426 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-02 |
| Reference | Marcy et al. 2014 |
At 2.862 Earth masses, Kepler-406 c is a so called Super Earth. Super Earths could be terrestrial worlds like Earth, but they could also be ocean worlds or terrestrial worlds wrapped in a substantial atmosphere, in which case some refer to them as Mini Neptunes.
| Mass | 2.710 Earth masses |
| Density | 24.390 grams per cubic centimeter |
| Radius | 0.850 Earth radiae |
| Semi-major Axis | 0.0552 AU |
| Eccentricity | 0 |
| Orbital Period | 4.623 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-02 |
| Reference | Marcy et al. 2014 |