The Kepler-4 system contains 1 exoplanet. It is located 1591.37 light years away from the solar system.
| Mass | 1.22 solar masses |
| Radius | 1.49 solar radiae |
| Temperature | 5857 kelvin |
| Stellar Metallicity | 0.17 decimal exponent |
| Age | 4.5 billion years |
At more than 10 Earth masses, Kepler-4 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 | 24.472 Earth masses |
| Density | 1.910 grams per cubic centimeter |
| Radius | 4.002 Earth radiae |
| Semi-major Axis | 0.0456 AU |
| Eccentricity | 0 |
| Orbital Period | 3.213 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2010-04 |
| Reference | Borucki et al. 2010 |