The HD 18599 system contains 1 exoplanet. It is located 125.78 light years away from the solar system.
| Mass | 0.86 solar masses |
| Radius | 0.77 solar radiae |
| Temperature | 5145 kelvin |
| Stellar Metallicity | 0 decimal exponent |
| Age | 0.4 billion years |
At more than 10 Earth masses, HD 18599 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 | 24.100 Earth masses |
| Density | 7.500 grams per cubic centimeter |
| Radius | 2.600 Earth radiae |
| Semi-major Axis | 0.048 AU |
| Eccentricity | 0.34 |
| Orbital Period | 4.137 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2022-10 |
| Reference | Desidera et al. 2022 |