The HD 109988 system contains 1 exoplanet. It is located 138.71 light years away from the solar system.
| Mass | 0.88 solar masses |
| Radius | 0.87 solar radiae |
| Temperature | 5185.97 kelvin |
| Stellar Metallicity | 0.14 decimal exponent |
| Age | - billion years |
At more than 50 Earth masses, HD 109988 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 6725.394 Earth masses |
| Density | 20.900 grams per cubic centimeter |
| Radius | 12.100 Earth radiae |
| Semi-major Axis | 12.511098 AU |
| Eccentricity | 0.05578 |
| Orbital Period | 17132.159 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Multiple Observatories |
| Discovery Telescope | Multiple Telescopes |
| Discovery Instrument | Multiple Instruments |
| Discovery Date | 2022-09 |
| Reference | Feng et al. 2022 |