The Kepler-123 system contains 2 exoplanets. It is located 3332.21 light years away from the solar system.
| Mass | 1.01 solar masses |
| Radius | 1.26 solar radiae |
| Temperature | 6089 kelvin |
| Stellar Metallicity | -0.03 decimal exponent |
| Age | 0.48 billion years |
At more than 50 Earth masses, Kepler-123 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 55.300 Earth masses |
| Density | 12.000 grams per cubic centimeter |
| Radius | 2.940 Earth radiae |
| Semi-major Axis | 0.135 AU |
| Eccentricity | 0 |
| Orbital Period | 17.232 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-03 |
| Reference | Rowe et al. 2014 |
At 2.795 Earth masses, Kepler-123 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 | 2.790 Earth masses |
| Density | 4.730 grams per cubic centimeter |
| Radius | 1.480 Earth radiae |
| Semi-major Axis | 0.181 AU |
| Eccentricity | 0 |
| Orbital Period | 26.695 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-03 |
| Reference | Rowe et al. 2014 |