The HD 155918 system contains 2 exoplanets. It is located 89.89 light years away from the solar system.
| Mass | 1.03 solar masses |
| Radius | 1.02 solar radiae |
| Temperature | 5771.84 kelvin |
| Stellar Metallicity | -0.662 decimal exponent |
| Age | 12.3 billion years |
At more than 10 Earth masses, HD 155918 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 | 7.502 Earth masses |
| Density | 2.220 grams per cubic centimeter |
| Radius | 2.650 Earth radiae |
| Semi-major Axis | 0.030046 AU |
| Eccentricity | -0.079533 |
| Orbital Period | 1.876 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 155918 c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 1849.856 Earth masses |
| Density | 4.850 grams per cubic centimeter |
| Radius | 12.800 Earth radiae |
| Semi-major Axis | 13.125939 AU |
| Eccentricity | 0.07103 |
| Orbital Period | 17202.194 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 |