HD 81817 b
Orbiting HD 81817
HD 81817 b is an exoplanet orbiting the star HD 81817, discovered in 2020 using the Radial Velocity method.
Mass
7668.56
Earth masses
Orbital Period
1021.2
days
Distance
269.1
parsecs
Radius (Earth radii)
Unknown
Mass (Earth masses)
7668.56
Measured
Equilibrium Temperature
Unknown
Parameter source: Feng et al. 2022
Orbital Period
1021.202+13.884−9.891days
Semi-Major Axis
3.2330+0.1250−0.1310au
Planet Mass (Earth masses)
7668.56+3097.87−219.62
Planet Mass (Jupiter masses)
24.1280+9.7470−0.6910
Eccentricity
0.0970+0.0900−0.0570
Epoch of Periastron
2452830.87+102.06−289.91days(BJD)
Argument of Periastron
294.2+44.2−93.3deg
Radial Velocity Semi-Amplitude
183.42+3.55−3.57m/s
Distance from Earth
269.1 pc (~878 ly)
Spectral Type
Unknown
Temperature
Unknown
Mass (Solar)
4.30 M☉
Radius (Solar)
Unknown
Luminosity
Unknown
Planets in System
2
Stars in System
1
Coordinates (RA, Dec)
144.2716°, 81.3263°
Discovery Method
Radial Velocity
Discovery Year
2020
Source ID: HD 81817 b
HD 81817 b orbits HD 81817 and was reported in 2020 and was detected with the Radial Velocity method.
Published measurements list a mass of 7,668.56 Earth masses and an orbital period of 1,021.2 days.
Catalog data places the system at about 269.1 parsecs from Earth and 2 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open HD 81817More planets in this system