The HD 18143 system contains 2 exoplanets. It is located 73.46 light years away from the solar system.
| Mass | 0.85 solar masses |
| Radius | 0.87 solar radiae |
| Temperature | 5078 kelvin |
| Stellar Metallicity | 0.28 decimal exponent |
| Age | 9.4 billion years |
At more than 10 Earth masses, HD 18143 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 | 10.510 Earth masses |
| Density | 1.710 grams per cubic centimeter |
| Radius | 3.230 Earth radiae |
| Semi-major Axis | 0.087639 AU |
| Eccentricity | 0.224176 |
| Orbital Period | 10.285 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 |
At more than 50 Earth masses, HD 18143 c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 3115.444 Earth masses |
| Density | 8.770 grams per cubic centimeter |
| Radius | 12.500 Earth radiae |
| Semi-major Axis | 17.521435 AU |
| Eccentricity | 0.194257 |
| Orbital Period | 28982.418 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 |