The HD 31527 system contains 3 exoplanets. It is located 125.40 light years away from the solar system.
| Mass | 0.96 solar masses |
| Radius | 1.07 solar radiae |
| Temperature | 5898 kelvin |
| Stellar Metallicity | -0.17 decimal exponent |
| Age | - billion years |
At more than 10 Earth masses, HD 31527 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 | 10.470 Earth masses |
| Density | 1.720 grams per cubic centimeter |
| Radius | 3.220 Earth radiae |
| Semi-major Axis | 0.1254 AU |
| Eccentricity | 0.1 |
| Orbital Period | 16.553 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2019-02 |
| Reference | Udry et al. 2019 |
At more than 10 Earth masses, HD 31527 c 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 | 14.160 Earth masses |
| Density | 1.360 grams per cubic centimeter |
| Radius | 3.850 Earth radiae |
| Semi-major Axis | 0.2663 AU |
| Eccentricity | 0.04 |
| Orbital Period | 51.205 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2019-02 |
| Reference | Udry et al. 2019 |
At more than 10 Earth masses, HD 31527 d 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 | 11.820 Earth masses |
| Density | 1.570 grams per cubic centimeter |
| Radius | 3.460 Earth radiae |
| Semi-major Axis | 0.8098 AU |
| Eccentricity | 0.24 |
| Orbital Period | 271.674 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2019-02 |
| Reference | Udry et al. 2019 |