The Kepler-128 system contains 2 exoplanets. It is located 1292.81 light years away from the solar system.
| Mass | 1.09 solar masses |
| Radius | 1.61 solar radiae |
| Temperature | 6136 kelvin |
| Stellar Metallicity | 0 decimal exponent |
| Age | 4.07 billion years |
With a mass below 5 Earth masses, a density of 1.46, and a semi-major axis of 0.1231 astronomical units, Kepler-128 b could, potentially, be an ocean world - a planet with no dry land.
| Mass | 0.770 Earth masses |
| Density | 1.460 grams per cubic centimeter |
| Radius | 1.430 Earth radiae |
| Semi-major Axis | 0.1231 AU |
| Eccentricity | 0 |
| Orbital Period | 15.090 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-02 |
| Reference | Xie 2014 |
With a mass below 5 Earth masses, a density of 2.07, and a semi-major axis of 0.1622 astronomical units, Kepler-128 c could, potentially, be an ocean world - a planet with no dry land.
| Mass | 0.900 Earth masses |
| Density | 2.070 grams per cubic centimeter |
| Radius | 1.340 Earth radiae |
| Semi-major Axis | 0.1622 AU |
| Eccentricity | 0 |
| Orbital Period | 22.804 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-02 |
| Reference | Xie 2014 |