HD 81817 c
Orbiting HD 81817
HD 81817 c is an exoplanet orbiting the star HD 81817, discovered in 2022 using the Radial Velocity method.
Minimum Mass (M sin i)
7185.78
Earth masses
Orbital Period
623.0
days
Distance
269.1
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
7185.78
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Feng et al. 2022
Orbital Period
622.978+2.019−2.120days
Semi-Major Axis
2.3250+0.0870−0.0950au
M sin(i) (Earth masses)
7185.78+590.84−596.25
M sin(i) (Jupiter masses)
22.6090+1.8590−1.8760
Eccentricity
0.0950+0.0580−0.0440
Epoch of Periastron
2453031.77+37.83−81.46days(BJD)
Argument of Periastron
228.0+35.3−29.1deg
Radial Velocity Semi-Amplitude
203.63+7.10−5.14m/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
2022
Source ID: HD 81817 c
HD 81817 c orbits HD 81817 and was reported in 2022 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 7,185.78 Earth masses (M sin i) and an orbital period of 622.98 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