The HD 1666 system contains 1 exoplanet. It is located 384.56 light years away from the solar system.
| Mass | 1.5 solar masses |
| Radius | 1.93 solar radiae |
| Temperature | 6317 kelvin |
| Stellar Metallicity | 0.37 decimal exponent |
| Age | 1.76 billion years |
At more than 50 Earth masses, HD 1666 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 2040.000 Earth masses |
| Density | 5.470 grams per cubic centimeter |
| Radius | 12.700 Earth radiae |
| Semi-major Axis | 0.94 AU |
| Eccentricity | 0.63 |
| Orbital Period | 270.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Multiple Observatories |
| Discovery Telescope | Multiple Telescopes |
| Discovery Instrument | Multiple Instruments |
| Discovery Date | 2015-06 |
| Reference | Harakawa et al. 2015 |