The Kepler-40 system contains 1 exoplanet. It is located 7517.93 light years away from the solar system.
| Mass | 1.48 solar masses |
| Radius | 2.13 solar radiae |
| Temperature | 6510 kelvin |
| Stellar Metallicity | 0.1 decimal exponent |
| Age | 2.8 billion years |
At more than 50 Earth masses, Kepler-40 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 699.200 Earth masses |
| Density | 1.680 grams per cubic centimeter |
| Radius | 13.110 Earth radiae |
| Semi-major Axis | 0.08 AU |
| Eccentricity | 0 |
| Orbital Period | 6.873 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2011-04 |
| Reference | Santerne et al. 2011 |