The HD 108236 system contains 5 exoplanets. It is located 210.69 light years away from the solar system.
| Mass | 0.87 solar masses |
| Radius | 0.88 solar radiae |
| Temperature | 5660 kelvin |
| Stellar Metallicity | -0.28 decimal exponent |
| Age | 6.7 billion years |
At 3.244 Earth masses, HD 108236 b is a so called Super Earth. Super Earths could be terrestrial worlds like Earth, but they could also be ocean worlds or terrestrial worlds wrapped in a substantial atmosphere, in which case some refer to them as Mini Neptunes.
| Mass | 3.240 Earth masses |
| Density | 4.230 grams per cubic centimeter |
| Radius | 1.615 Earth radiae |
| Semi-major Axis | 0.04527 AU |
| Eccentricity | 0.045 |
| Orbital Period | 3.796 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2021-02 |
| Reference | Daylan et al. 2021 |
With a mass below 5 Earth masses, a density of 3.06, and a semi-major axis of 0.062 astronomical units, HD 108236 c could, potentially, be an ocean world - a planet with no dry land.
| Mass | 4.940 Earth masses |
| Density | 3.060 grams per cubic centimeter |
| Radius | 2.071 Earth radiae |
| Semi-major Axis | 0.062 AU |
| Eccentricity | 0.034 |
| Orbital Period | 6.203 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2021-02 |
| Reference | Daylan et al. 2021 |
At more than 10 Earth masses, HD 108236 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 | 6.980 Earth masses |
| Density | 2.340 grams per cubic centimeter |
| Radius | 2.539 Earth radiae |
| Semi-major Axis | 0.1074 AU |
| Eccentricity | 0.055 |
| Orbital Period | 14.176 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2021-02 |
| Reference | Daylan et al. 2021 |
At more than 10 Earth masses, HD 108236 e 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 | 9.710 Earth masses |
| Density | 1.820 grams per cubic centimeter |
| Radius | 3.083 Earth radiae |
| Semi-major Axis | 0.1367 AU |
| Eccentricity | 0.058 |
| Orbital Period | 19.590 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2021-02 |
| Reference | Daylan et al. 2021 |
With a mass below 5 Earth masses, a density of 3.16, and a semi-major axis of 0.1758 astronomical units, HD 108236 f could, potentially, be an ocean world - a planet with no dry land.
| Mass | 4.720 Earth masses |
| Density | 3.160 grams per cubic centimeter |
| Radius | 2.017 Earth radiae |
| Semi-major Axis | 0.1758 AU |
| Eccentricity | 0.051 |
| Orbital Period | 29.541 days |
| Discovery Method | Transit |
| Discovery Facility | CHaracterising ExOPlanets Satellite (CHEOPS) |
| Discovery Telescope | 0.3 m Ritchey-Chretien Telescope |
| Discovery Instrument | Teledyne e2v CCD detector |
| Discovery Date | 2021-02 |
| Reference | Bonfanti et al. 2021 |