The HD 111998 system contains 1 exoplanet. It is located 108.36 light years away from the solar system.
| Mass | 1.18 solar masses |
| Radius | 1.45 solar radiae |
| Temperature | 6557 kelvin |
| Stellar Metallicity | 0.07 decimal exponent |
| Age | 1.9 billion years |
At more than 50 Earth masses, HD 111998 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 1433.413 Earth masses |
| Density | 3.670 grams per cubic centimeter |
| Radius | 12.900 Earth radiae |
| Semi-major Axis | 1.82 AU |
| Eccentricity | 0.03 |
| Orbital Period | 825.900 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2017-03 |
| Reference | Borgniet et al. 2017 |