The HD 215497 system contains 2 exoplanets. It is located 132.25 light years away from the solar system.
Mass | 0.67 solar masses |
Radius | 0.85 solar radiae |
Temperature | 5110 kelvin |
Stellar Metallicity | 0.2 decimal exponent |
Age | 7 billion years |
At more than 10 Earth masses, HD 215497 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 | 6.357 Earth masses |
Density | 2.530 grams per cubic centimeter |
Radius | 2.400 Earth radiae |
Semi-major Axis | 0.05 AU |
Eccentricity | 0.16 |
Orbital Period | 3.934 days |
Discovery Method | Radial Velocity |
Discovery Facility | La Silla Observatory |
Discovery Telescope | 3.6 m ESO Telescope |
Discovery Instrument | HARPS Spectrograph |
Discovery Date | 2010-03 |
Reference | Lo Curto et al. 2010 |
At more than 50 Earth masses, HD 215497 c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
Mass | 104.300 Earth masses |
Density | 0.293 grams per cubic centimeter |
Radius | 12.500 Earth radiae |
Semi-major Axis | 1.282 AU |
Eccentricity | 0.49 |
Orbital Period | 567.940 days |
Discovery Method | Radial Velocity |
Discovery Facility | La Silla Observatory |
Discovery Telescope | 3.6 m ESO Telescope |
Discovery Instrument | HARPS Spectrograph |
Discovery Date | 2010-03 |
Reference | Lo Curto et al. 2010 |