The HD 128356 system contains 1 exoplanet. It is located 85.31 light years away from the solar system.
| Mass | 0.65 solar masses |
| Radius | 0.85 solar radiae |
| Temperature | 4875 kelvin |
| Stellar Metallicity | 0.17 decimal exponent |
| Age | 10 billion years |
At more than 50 Earth masses, HD 128356 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 282.869 Earth masses |
| Density | 0.579 grams per cubic centimeter |
| Radius | 13.900 Earth radiae |
| Semi-major Axis | 0.87 AU |
| Eccentricity | 0.57 |
| Orbital Period | 298.200 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Multiple Observatories |
| Discovery Telescope | Multiple Telescopes |
| Discovery Instrument | Multiple Instruments |
| Discovery Date | 2017-04 |
| Reference | Jenkins et al. 2017 |