HD 81688 b
Orbiting HD 81688
HD 81688 b is an exoplanet orbiting the star HD 81688, discovered in 2007 using the Radial Velocity method.
Minimum Mass (M sin i)
525.69
Earth masses
Orbital Period
183.9
days
Distance
85.7
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
525.69
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Teng et al. 2023
Orbital Period
183.930+0.090−0.090days
Semi-Major Axis
0.6480+0.0000−0.0000au
M sin(i) (Earth masses)
525.69+17.16−17.48
M sin(i) (Jupiter masses)
1.6540+0.0540−0.0550
Eccentricity
0.0400+0.0220−0.0310
Epoch of Periastron
2454354.40+80.20−16.90days(JD)
Argument of Periastron
-14.4+66.3−63.0deg
Radial Velocity Semi-Amplitude
56.42+1.87−1.88m/s
Distance from Earth
85.7 pc (~280 ly)
Spectral Type
K0 III-IV
Temperature
4797 K
Mass (Solar)
1.07 M☉
Radius (Solar)
11.13 R☉
Luminosity
1.78 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
142.1666°, 45.6009°
Discovery Method
Radial Velocity
Discovery Year
2007
Source ID: HD 81688 b
HD 81688 b orbits HD 81688 and was reported in 2007 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 525.69 Earth masses (M sin i) and an orbital period of 183.93 days.
Catalog data places the system at about 85.7 parsecs from Earth, a host star classified as K0 III-IV, and 1 known planet in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open HD 81688