HD 220689 b
Orbiting HD 220689
HD 220689 b is an exoplanet orbiting the star HD 220689, discovered in 2012 using the Radial Velocity method.
Minimum Mass (M sin i)
355.33
Earth masses
Orbital Period
2266.4
days
Distance
46.9
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
355.33
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Barbato et al. 2018
Orbital Period
2266.400+65.840−58.770days
Semi-Major Axis
3.3960+0.0840−0.0810au
M sin(i) (Earth masses)
355.33+11.12−11.12
M sin(i) (Jupiter masses)
1.1180+0.0350−0.0350
Eccentricity
0.0540+0.0610−0.0380
Epoch of Periastron
2457532.90+772.50−478.10days(BJD)
Argument of Periastron
112.8+194.3−80.1deg
Radial Velocity Semi-Amplitude
17.12+1.26−1.19m/s
Distance from Earth
46.9 pc (~153 ly)
Spectral Type
Unknown
Temperature
5921 K
Mass (Solar)
1.02 M☉
Radius (Solar)
1.07 R☉
Luminosity
Unknown
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
351.4707°, -20.6168°
Discovery Method
Radial Velocity
Discovery Year
2012
Source ID: HD 220689 b
HD 220689 b orbits HD 220689 and was reported in 2012 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 355.33 Earth masses (M sin i) and an orbital period of 2,266.4 days.
Catalog data places the system at about 46.9 parsecs from Earth 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 220689