HD 221585 b
Orbiting HD 221585
HD 221585 b is an exoplanet orbiting the star HD 221585, discovered in 2016 using the Radial Velocity method.
Minimum Mass (M sin i)
511.71
Earth masses
Orbital Period
1173.0
days
Distance
55.9
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
511.71
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Díaz et al. 2016
Orbital Period
1173.000+16.000−16.000days
Semi-Major Axis
2.3060+0.0810−0.0810au
M sin(i) (Earth masses)
511.71+44.50−44.50
M sin(i) (Jupiter masses)
1.6100+0.1400−0.1400
Eccentricity
0.1230+0.0690−0.0690
Epoch of Periastron
2455050.00+93.00−93.00days(BJD)
Argument of Periastron
-6.8+28.0−28.0deg
Radial Velocity Semi-Amplitude
27.90+1.60−1.60m/s
Distance from Earth
55.9 pc (~182 ly)
Spectral Type
G8 IV
Temperature
5620 K
Mass (Solar)
1.19 M☉
Radius (Solar)
Unknown
Luminosity
0.42 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
353.2294°, 63.1556°
Discovery Method
Radial Velocity
Discovery Year
2016
Source ID: HD 221585 b
HD 221585 b orbits HD 221585 and was reported in 2016 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 511.71 Earth masses (M sin i) and an orbital period of 1,173 days.
Catalog data places the system at about 55.9 parsecs from Earth, a host star classified as G8 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 221585